| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 418054000 |
WORKING MEMBER HAS PLANETARY OR PLANETATING MOVEMENT
| 653 |
| 418191000 |
INTERENGAGING ROTATING MEMBERS
| 285 |
| 418001000 |
METHODS
| 168 |
| 418016000 |
WITH CHANGEABLE WORKING CHAMBER MAGNITUDE
| 125 |
| 418104000 |
WITH MECHANICAL SEALING
| 121 |
| 418083000 |
HEAT EXCHANGE OR NON-WORKING FLUID LUBRICATING OR SEALING
| 82 |
| 418005000 |
MULTISTAGE
| 67 |
| 418160000 |
MOVING CYLINDER
| 65 |
| 418259000 |
POSITIVELY ACTUATED VANE
| 64 |
| 418048000 |
UNLIKE HELICAL SURFACES ON RELATIVELY WOBBLING ROTATING MEMBER AND ENCOMPASSING CYLINDER (E.G., MOINEAU TYPE)
| 63 |
| 418015000 |
WITH PLURAL WORKING FLUID INLET OR OUTLET PASSAGES
| 20 |
| 418209000 |
PLURAL WORKING CHAMBERS
| 20 |
| 418049000 |
NUTATING WORKING MEMBER
| 16 |
| 418075000 |
GROOVED ABUTTING CYLINDER-ROTATING MEMBER END SURFACES
| 14 |
| 418228000 |
AXIALLY MOVING VANE OR ABUTMENT
| 13 |
| 418181000 |
COMBINED
| 13 |
| 418179000 |
SPECIFIC MATERIAL
| 12 |
| 418152000 |
NON-METALLIC WORKING MEMBER, CYLINDER OR PARTITION
| 12 |
| 418178000 |
WITH WEAR SURFACE TREATMENT OR INTEGRALLY PLATED WEAR LAYER
| 10 |
| 418003000 |
DIVERSE ROTARY EXPANSIBLE CHAMBER DEVICES
| 8 |
| 418150000 |
WORKING CHAMBER SURFACE EXPRESSED MATHEMATICALLY
| 8 |
| 418243000 |
POSITIVELY ACTUATED ABUTMENT
| 7 |
| 418033000 |
INTERMITTENTLY ACCELERATED AND RECEDING MEMBERS ROTATE IN SAME PATH (ALTERNATING PISTON TYPE)
| 6 |
| 418180000 |
APERTURED BYPASS TO PRESSURIZE OR RELIEVE WORKING CHAMBER ZONE OF INTERMEDIATE PRESSURE
| 6 |
| 418225000 |
VANE OR ABUTMENT COMPRISES ROTATABLE ELEMENT | 5 |
| 20140199201 | COMPRESSOR WITH ROTATING CAM AND SLIDING END VANES - An apparatus for compressing or pumping fluid includes a housing having an interior chamber. The housing includes an end wall having a fluid inlet and a fluid outlet. A rotating cam is rotatably mounted within the interior chamber and includes a cam body having an end with a sloped annular channel formed therein. The apparatus also includes am end vane slidably mounted within a slot in the end wall so as to extend into the sloped annular channel for sliding therein as the rotating cam rotates. The end vane divides the sloped annular channel into an inlet chamber and an outlet chamber such that, as the rotating cam rotates, the inlet chamber expands and communicates with the fluid inlet for receiving the fluid, and the outlet chamber contracts and communicates with the fluid outlet for expelling the fluid. | 07-17-2014 |
| 20090142216 | FIXED VANE TYPE HYDRAULIC MOTOR - Disclosed is a fixed vane type hydraulic motor in which a steady output can be obtained and rotation speed of an output shaft can be varied. The hydraulic motor includes a main body having an actuating space provided therein, a fluid passing device to make the fluid flow toward the main body and a horizontal rotation body, a fluid compulsorily circulating device to compulsorily circulate the fluid through the respective fluid chambers, and an oblique rotation body having a rotation plate which is rotatably mounted to the opened opposite side of the main body and to the horizontal rotation body by a fixing device. | 06-04-2009 |
| 20090142215 | Vane Pump with Tilting Pad Radial Bearings - A vane pump comprises: a drive shaft that passes through the pump frame; a rotor coupled to the drive shaft that has multiple vanes and rotates within the pump frame in an axial direction about an axis of rotation with an outer rotor surface that has a radius that extends from the axis of rotation; a cam ring within the pump frame that circumscribes the rotor and vanes with a cam ring inner surface; multiple radial tilting pad bearings that support the cam ring; a bearing support ring coupled to the pump frame that generally circumscribes the cam ring and mounts the radial tilting pad bearings; side plates that radially extend from the drive shaft to the pump frame to enclose the rotor and the cam ring with at least one side plate having an inlet port and an outlet port; and means for initiating rotation of the cam ring from rest. | 06-04-2009 |
| 20120164018 | METERING PUMP WITH SPECIAL-SHAPED CAVITY - The invention discloses a metering pump with a special-shaped cavity, which comprises a housing, a rotor and two cover plates. The housing is a cylinder with a special-shaped surface inner cavity, an inlet and an outlet, and the special-shaped surface inner cavity is formed by combining a circular arc surface with a non-circular arc surface. The rotor comprises a rotor body and two pairs of combined sliding plates, wherein the rotor body is a column body processed with a transmission shaft, a centering shaft and crisscross guide grooves, and the combined sliding plates are mounted in the guide grooves. The cover plates are flat plates processed with bearing holes. The two end surfaces of the housing are matched with the cover plates for constituting a sealed cavity. In the sealed cavity, the rotor is matched with the bearing holes on the cover plates through the transmission shaft and the centering shaft. External driving force couple is acted on the transmission shaft so as to enable the rotor to rotate. When the rotor rotates, the non-circular arc surface of the special-shaped surface inner cavity can enable the two pairs of the combined sliding plates to slide in a cross manner so as to suck in fluid from the inlet and press out the fluid from the outlet. When the rotor rotates one cycle, four standard volumes are formed in a cavity body and the equal quantity of the fluid flows by the cavity body when the rotor rotates every one cycle. The flow rate of the fluid is metered by counting the number of rotation cycles of the rotor. | 06-28-2012 |
| 20140271315 | VANE COMPRESSOR - To allow a bush to stably rotate about a bush center, an end of a vane portion that is close to an inner circumferential surface center is always positioned on the inner side with respect to the bush center. Thereby, in a vane compressor a vane is stably supported, wear at a tip of the vane is suppressed, loss due to sliding on bearings is reduced by supporting a rotating shaft portion with a small diameter, and accuracy in outside diameter and center of rotation of a rotor portion is increased. | 09-18-2014 |
| 418270000 |
MISCELLANEOUS | 5 |
| 20080199342 | Vacuum Pump for Vehicle Motors and a One-Way Valve for Said Vacuum Pump - The invention relates to a vacuum pump ( | 08-21-2008 |
| 20090123320 | Power Steering System Hydraulic Pump - A power steering system hydraulic pump has a pump component which is to be sealed and a first pump cover. A flat sealing element is provided between the pump component which is to be sealed and the first pump cover. | 05-14-2009 |
| 20090285711 | FLUID MACHINE - A housing of a Roots pump is configured by joining a lower housing member and an upper housing member that are separable from each other. With the upper and lower housing members joined together, an upper accommodating portion and a lower accommodating portion form a front bearing accommodating portion and a rear bearing accommodating portion, which accommodate whole bearings, respectively. The Roots pump further includes bearing holders attached to the bearings and fixed to the lower housing member so that the bearings are received in the lower accommodating portion in a positioned state. | 11-19-2009 |
| 20100092325 | PNEUMATIC VANE MOTOR - A pneumatic vane motor includes a stator with a cylinder, an inlet connectable to a pressure air source and an outlet connectable to an exhaust passage, a rotor journalled in the stator, and an output shaft. The stator has a front opening forming a clearance seal relative to the output shaft and an annular front cover with at least one elastic annular seal element encircling the output shaft at a distance from the clearance seal, wherein a low pressure chamber is formed between the clearance seal and the seal element or elements and communicates with the exhaust passage. | 04-15-2010 |
| 20130004358 | ADJUSTABLE FAIL-SAFE ROTARY SPRING OPERATOR WITH A RETAINING BAND - A rotary spring-return actuator operator is provided with a multi-slot shaft and a clock type spring retained by a retaining band which encircles the spring in such a manner as to insure that the potential energy within the spring is safely contained during all operations requiring disassembly of the actuator assembly, and wherein the retaining band facilitates the in-field reversal of the spring direction or the adjustment of the spring preload by securing the spring to one or more of the slots on the multi-slot shaft. | 01-03-2013 |
| 418002000 |
WITH SIGNAL, INDICATOR OR TRANSPARENT INSPECTION MEANS | 5 |
| 20090220366 | Slide valve position indicator - The angular displacement of an inclined cam about the compressor slide valve shaft rotates an annular surface having a helically inclined face aligned with and spaced apart from a sensor head of a magnetic sensor mounted to the compressor. The rotation provides a linear variation in the size of the gap between the sensor head and the inclined ramp which directly corresponds to the compressor slide valve position between its fully closed and fully open positions. Linear variation in the size of the gap produces a correspondingly linear output signal from the magnetic sensor which provides the input for an analog input card in an associated programmable logic controller to determine the slide value position. | 09-03-2009 |
| 20100322805 | METHOD OF CONTROLLING A GEAR PUMP AS WELL AS AN APPLICATION OF THE METHOD - A method of controlling a gear pump comprising two meshing gear wheels ( | 12-23-2010 |
| 20100322806 | ARRANGEMENT INCLUDING A GEAR PUMP - An arrangement including a gear pump ( | 12-23-2010 |
| 20130259724 | ROTARY PISTON MACHINE - A rotary piston machine is disclosed. In one aspect, the machine includes a shaft and a shaft encoder including a first structure, based on which the rotational speed and/or the rotational position of the shaft can be determined by scanning the first structure with a sensor. The shaft encoder has a rotationally asymmetrical mass distribution in order to produce an imbalance. | 10-03-2013 |
| 20160201674 | Scroll Vacuum Pump and Method of Maintenance Including Replacing a Tip Seal of a Scroll Vacuum Pump | 07-14-2016 |
| 418045000 |
COLLAPSIBLE PROGRESSIVELY DEFORMED WORKING CHAMBER WALL | 5 |
| 20090220367 | ROTARY PUMP - The claimed invention relates to rotary pumps. The claimed rotary pump comprises: an hollow housing having a side wall and end-face walls; a shaft rotatably positioned in the housing essentially in parallel with the side wall, the distance between the housing side wall and the shaft is variable; deformable rollers that are arranged and adapted to move, when the shaft rotates, between the housing side-wall and the shaft, while moving their deformation being maximal in the region of the minimal distance between the housing side-wall and the shaft; and sealed cavities, each of which cavities being defined by two contiguous rollers, the housing's side wall and end-face walls; the sealed cavities being adapted to communicate with the suction port as their volume increases, and communicate with the delivery port as their volume decreases. The technical result: an enhanced delivery capacity—with simultaneous decrease in dimensions and mass; an improved cost-effectiveness, extended longevity and more simple operation. | 09-03-2009 |
| 20110165005 | PERISTALTIC PUMP AND IRRIGATION LINE - A flexible tube portion for an irrigation line connected to a supply of fluid for surgical or dental use is disclosed, wherein the flexible tube portion cooperates with rollers of a peristaltic pump for distributing fluid, and it includes means which, between two free ends thereof, define a distance, which, combined with the length of the tube portion, gives the tube portion a determined profile enabling its positioning directly underneath the raceway of the rollers of the pump. Also disclosed is a peristaltic pump including a plurality of rollers that roll over a flexible tube portion of an irrigation line connected to a supply of fluid for surgical or dental use, wherein it includes means for receiving the flexible tube portion in front of the plane in which the rollers move, then bringing the flexible tube portion underneath the rollers, and then pressing the tube portion against the rollers. | 07-07-2011 |
| 20110171052 | PERISTALTIC PUMP ASSEMBLY - A peristaltic pump assembly includes a pump body including a mounting pin coupled thereto. A removable cassette is slidably received on the mounting pin and is secured to the pump body via a retaining feature. The mounting pin is also configured to allow the removable cassette to rotate into and/or out of an installed position, or to position(s) therebetween. | 07-14-2011 |
| 20110194962 | VANE PUMP WITH VARIABLE DISCHARGE VOLUME - The present invention relates to a vane pump with variable discharge volume, and comprising a pump housing; a cam ring having an elliptical cross-section for its inner circumference and outer circumference to form a compression chamber wherein a compression medium is compressed, and is accommodated in said pump housing so that it may rote; a rotor hat is accommodated such that a plurality of vanes may appear frequently on the outer circumference to undergo rotations in the compression chamber of said cam ring and compress said compression medium; and a cam ring rotation controller that contacts the outer circumference of said cam ring, and rotates said cam ring if the discharge pressure of said compression medium is equal to or more than its pressure setting and stops the rotation of said cam ring if the discharge pressure of said compression medium is less than its pressure setting to control rotations of said cam ring. Accordingly, the rotation and stoppage of rotation of the cam ring is accomplished based on changes in the discharge pressure, to enable variation in discharge volumes, and enhancement of discharge efficiency. | 08-11-2011 |
| 20140044579 | ROTARY DIAPHRAGM PUMP - The rotary diaphragm pump has a flexible, resilient diaphragm band surrounding an elliptical frame within a case having four chambers surrounding an elliptical core. An articulating mechanism has a plurality of wheels traveling along the elliptical edges of the frame. The mechanism extends and retracts as the wheels move from maximum extension along the major axis of their elliptical tracks to minimum extension at the minor axis of their tracks. This mechanism drives a pair of actuator rollers along the inner surface of the diaphragm, periodically forcing the diaphragm into the surrounding chambers to produce the pumping action. Each chamber has an inlet port and an outlet port. The various ports may be interconnected to provide one or more multi-stage pumps in combination with one or more single-stage pumps, as desired. Two or more pumps may be joined in tandem to provide greater capacity from a single drive shaft. | 02-13-2014 |
| 418183000 |
WITH SUPPLY OR EXHAUST PASSAGE IN WORKING MEMBER | 5 |
| 20090162233 | ELECTRIC COMPRESSOR - An electric compressor ( | 06-25-2009 |
| 20140377113 | Pump and/or Compressor Arrangement Including Mating, Oscillatable Vane Members for the Simultaneous Admission and Discharge of Fluid - The present invention relates to an apparatus for pumping or compressing a fluid, the apparatus characterised by a compression chamber including an inlet and outlet, opposed front and rear vane members disposed inside said compression chamber, each vane member including at least one axially extending vane segment and at least one radially disposed open segment adapted to receive a vane segment of the opposed vane member, wherein adjacent vane segments of mating vane members form radial compartments there between. The assembly further includes a swing arm assembly for effecting equal and opposite rotational oscillation of the front and rear vane members such that adjacent vane segments oscillate toward and away from one another simultaneously, thereby creating a bellowing effect which draws fluid into the chamber via the inlet and discharges fluid out of the chamber via the outlet. The invention further relates to an assembly for translating rotational motion of an input shaft to oscillatory motion of the vane members. | 12-25-2014 |
| 20090280021 | HYDRAULIC MACHINE - A hydraulic pump or motor includes a body having a chamber and a rotor rotatably mounted within the chamber. The chamber and rotor are shaped to define one or more rise regions, fall regions, major dwell regions and minor dwell regions between walls of the chamber and the rotor. The rotor has a plurality of slots and vanes located in each slot. Each vane is movable between a retracted position and an extended position. In the retracted position, the vanes are unable to work the hydraulic fluid introduced into the chamber whereas they are able to work the hydraulic fluid introduced into the chamber in the extended position. A vane retaining member that is selectively actuable enables the vanes to be retained in the retracted position. | 11-12-2009 |
| 20140219853 | Vane for a Vane Cell Device, as Well as a Vane Cell Device - A vane for a vane cell device comprising a stator and a rotor rotatably arranged in the stator with a plurality of guide grooves in each of which a vane can be movably mounted along a direction of movement. The vane has a high-pressure side, and a low-pressure side facing the high-pressure side, for fluid conveyed or flowing through a workspace of the vane cell device. The vane has a first side wall formed on the high-pressure side and a second side wall formed on the low-pressure side, wherein the first and second side wall are connected to each other by a plurality of ribs forming lateral limits of fluid channels. The first and second side wall are offset relative to each other so that the high-pressure side is only partially covered by the first side wall, and the low-pressure side is only partially covered by the second side wall. | 08-07-2014 |
| 20100290940 | RADIAL AXIS, SPHERICAL BASED ROTARY MACHINES - A rotary machine which can be either a pump or an internal combustion engine has a housing enclosing a plurality of rotor spindles lying on the surface of an imaginary cone for driving an output shaft positioned at the vertex of the imaginary cone. The spindles have a beveled gear on one end and engaging an output shaft and a conical bearing on the other end. Angled eccentric rotors are mounted to each spindle shaped to maintain tangential sliding contact with two adjacent rotors to form a compression or combustion chamber. A spherical version of a compressor or an engine uses a plurality of rotary pistons each of which is eccentrically mounted and forms a spherical segment. Each rotary piston is mounted for tangential sliding contact with at least two other rotary pistons to form a displacement chamber therebetween. The rotary pistons use a generally “tear drop” shape. A rotary pump has a housing having a manifold for distributing intake and exhaust air. The pump has a plurality of lobe shafts, each having an eccentrically mounted rotor attached thereto mounted in the housing to form a compression chamber in the middle of the rotor when the rotors are all in contact with each other during rotation. | 11-18-2010 |
| 418069000 |
WITH FRANGIBLE DRIVE CONNECTION OR CLUTCH | 4 |
| 20090047162 | Compressor and Power Transmission Device - A compressor of the present invention having an electromagnetic clutch ( | 02-19-2009 |
| 20140023544 | FREEWHEEL HYDRAULIC MOTOR - The present disclosure relates to a hydraulic drive having a stationary housing. The hydraulic drive also has a drive shaft that extends through the stationary housing. Furthermore, the hydraulic drive has a hydraulic motor for rotating the drive shaft relative to the stationary housing. Additionally, the hydraulic drive includes a driven hub adapted to be connected to a rotatable driven element. The hydraulic drive also has a coupling/decoupling arrangement that allows the hydraulic drive to be operated in an engaged mode where the drive shaft is coupled to the driven hub in a direct drive arrangement and a disengaged mode where the drive shaft is decoupled from the driven hub. When the hydraulic drive is operated in the engaged mode torque from the drive shaft is transferred to the driven hub causing the driven hub to rotate relative to the stationary housing. When the hydraulic drive is operated in the disengaged mode the driven hub can free wheel relative to the drive shaft. | 01-23-2014 |
| 20140334959 | SUPERCHARGER TORSIONAL COMPLIANCE AND DAMPING FEATURES - A positive displacement pump ( | 11-13-2014 |
| 20150064039 | FLUID MACHINE AND RANKINE CYCLE - A fluid machine includes: a first shaft; a compressor/expander fluid machine; a planetary gear mechanism having a sun gear connected to a second shaft rotating in synchronization with the compressor/expander fluid machine, a ring gear connected to the first shaft, a planetary gear, and a planetary carrier; a first clutch that locks/releases the planetary carrier and one of the ring gear and the sun gear; a second clutch that locks/releases the planetary carrier and the housing; a clutch control unit that controls locking/releasing of the first and second clutches depending on whether the compressor/expander fluid machine operates as an expander or a compressor. | 03-05-2015 |
| 418157000 |
SHOCK OR PRESSURE RELIEVING YIELDABLE PERIPHERAL WORKING MEMBER OR CYLINDER SURFACE PORTION | 3 |
| 20120020824 | ROOTS SUPERCHARGER WITH A SHUNT PULSATION TRAP - A shunt pulsation trap for a Roots supercharger reduces pulsation, NVH and improves efficiency without significantly increasing overall size of the supercharger. Generally, a Roots supercharger with the shunt pulsation trap has a pair of interconnected and synchronized parallel multi-helical-lobe rotors housed in a transfer chamber with the same number of lobes for propelling flow from a suction port to a discharge port of the transfer chamber without internal compression. The shunt pulsation trap comprises an inner casing as an integral part of the transfer chamber, and an outer casing oversized surrounding the inner casing, therein housed various pulsation dampening means or pulsation energy recovery means or pulsation containment means, at least one injection port (trap inlet) branching off from the transfer chamber into the pulsation trap chamber and a feedback region (trap outlet) communicating with the supercharger outlet pressure. | 01-26-2012 |
| 20130039793 | REDUCED NOISE FLUID PUMP - A fluid pump includes a housing that defines a suction chamber, a discharge chamber, and a barrier having a first height, wherein the barrier is configured to separate the suction chamber from the discharge chamber. The pump also includes meshed first and second gears rotatably disposed in the housing. The gears are configured to draw relatively low-pressure fluid from the suction chamber, transform the relatively low-pressure fluid into relatively high-pressure fluid, and release the relatively high-pressure fluid into the discharge chamber. The barrier includes first and second portions configured to accept the first and second gears respectively, and a bridge connecting the first and second portions. The bridge is disposed proximately to where the gears mesh and is configured to provide a transition from the first height to a second height to thereby generate gradual re-expansion of the fluid away from the bridge. | 02-14-2013 |
| 20150361982 | SHUNT PULSATION TRAP FOR POSITIVE-DISPLACEMENT MACHINERY - A shunt pulsation trap for a positive-displacement gas-transfer machine having a gas transfer chamber with an intake port and a discharge port and having at least one positive-displacement drive device (such as two cooperating rotors) defining a compression region of the transfer chamber. The trap includes a pulsation-trap chamber arranged for parallel fluid flow with the machine transfer chamber. The trap has a first (e.g., inlet) port in communication with the compression region of the transfer chamber (e.g., at least one lobe span away or totally isolated from the transfer-chamber intake port), a second (e.g., discharge) port in communication with the discharge port of the transfer chamber, and at least one pulsation dampener in the pulsation-trap chamber. In this way, the shunt pulsation trap traps and attenuates gas pulsations before discharge from the machinery transfer chamber, thereby reducing induced NVH and improving machinery efficiency. | 12-17-2015 |
| 418151000 |
WEIGHT BALANCED WORKING MEMBER OR PARTITION | 3 |
| 20110135527 | LOW NOISE TYPE BALANCE SHAFT MODULE - A balance shaft module equipped with a dual pump including a main oil pump and a sub-oil pump may include a pump rotor rotatably coupled to a housing, a discharge space formed in the housing for discharging oil in the sub-oil pump, a pulse chamber formed in the housing to increase the discharge space, wherein the oil discharged through the discharge space is merged with the oil flowing through the pulse chamber such that discharge pulse pressure is reduced, and an eccentric washer having a discharging opening space formed by cutting off a portion inward from the outside, wherein the discharge opening space of the eccentric washer is connected to the discharge space to fluid-communicate with the discharge space of the pump rotor. | 06-09-2011 |
| 20120315176 | ROTARY CYLINDER DEVICE - Disclosed is a small rotary cylinder device wherein friction loss is reduced and energy is conserved by reducing effects of a reaction force applied from cylinders to pistons, which is incorporated in a piston composite body and which linearly reciprocates, the piston composite body being eccentrically connected to a first crank shaft rotating about a shaft. Guide bearings ( | 12-13-2012 |
| 20150369245 | VANE ROTARY COMPRESSOR - The present invention relates to a vane rotary compressor wherein the volume of a compression room is reduced and a fluid is compressed when a rotor rotates. According to one embodiment of the present invention, the present invention provides the vane rotary compressor for maximizing the rotational moment of a vane by extending a weight part at a front end part of the curved blade type vane so as to remove the hitting noise due to the delay of the rotational operation of the vane when the rotor is rotated, and increasing the performance by reducing the internal leak. | 12-24-2015 |
| 418102000 |
SHAFT OR TRUNNION LUBRICATION OR SEALING BY DIVERTED WORKING FLUID PORTION | 3 |
| 20090123318 | FLUID TRANSFER INSERT - A shaft assembly includes a fluid transfer insert located within a bore of a shaft. The fluid transfer insert seals to the shaft and includes at least one fluid channel that communicates between a plurality of fluid ports located in the shaft. The fluid channel is defined by an outer surface of the fluid transfer insert. | 05-14-2009 |
| 20100254844 | EXPANDER-COMPRESSOR UNIT - An expander-compressor unit ( | 10-07-2010 |
| 20110223049 | Fuel Pump For Internal Combustion Engines - A fuel pump is disclosed, especially a prefeed pump for feeding aircraft fuel to the high pressure pump, wherein the form-fit connection between the drive shaft ( | 09-15-2011 |
| 418071000 |
PRESSURE FLUID RADIALLY BALANCES WORKING OR ROTATING ABUTMENT MEMBER | 3 |
| 20090311120 | GEAR PUMP - An intended purpose of this invention is to realize a gear pump suitable for delivery of high-pressure and high-viscosity fluids by using helical gears | 12-17-2009 |
| 20110142704 | Roller Bearing Assembly - A roller bearing assembly is configured to rotatably support a machine component connected with a shaft in a position relative to a reference component. The roller bearing assembly includes a radial bearing, an axially-displaceable axial bearing and an adjusting device configured to adjust an axial gap between the machine component and the reference component by automated axial displacement of the axial bearing. The adjusting device includes a hydraulic regulating device configured to axially displace the axial bearing. | 06-16-2011 |
| 20150118092 | COMPRESSOR - In order to adapt a balance piston unit of a compressor to a high speed, and to extend a service life of the compressor, a screw compressor according to the present invention includes a screw rotor including a rotor shaft, a radial bearing, a thrust plate, a balance mechanism, which is a slide bearing, a lubrication oil supply flow passage for supplying a lubrication oil, and a working fluid supply flow passage for supplying a working fluid for pressing the balance mechanism toward the thrust plate so that a reverse thrust load acts on the thrust plate. | 04-30-2015 |
| 418241000 |
ABUTMENT OR VANE HAS CONCURRENT ROCKING AND RADIALLY SLIDING MOVEMENT | 3 |
| 20130064705 | VANE COMPRESSOR - There is provided a vane compressor with a plurality of vanes having a structure in which a rotor portion and a rotary shaft are unitarily formed so as to reduce bearing sliding loss of the rotary shaft and reduce gas leakage loss by narrowing a space formed between the rotor portion and the inner peripheral surface of a cylinder. In the vane compressor with the plurality of vanes according to the present invention, an angle α of a circular arc constituting the partial ring shape of each vane aligner satisfies a relationship of | 03-14-2013 |
| 20140322061 | CHECK VALVE FOR AN ENGINE VACUUM PUMP - A rotary vane pump includes a housing that encloses an air chamber. An intake aperture extends to the air chamber. A check valve couples with the intake aperture and includes a stop having first and second sides. A helical spring engages the first side and biases the second side against a valve seat. A porous body is disposed between the helical spring and the air chamber for preventing fluid backflow. | 10-30-2014 |
| 20140356213 | ROTARY MACHINE - A rotary machine ( | 12-04-2014 |
| 418182000 |
RELATIVELY MOVABLE WORKING MEMBER AND DRIVE SHAFT AXES | 3 |
| 20130183183 | ROTARY ENGINE - A “cat and mouse” rotary engine/pump comprising two inclined power shafts at the two ends of the rotor-pistons. Each power shaft connects to both rotor-pistons by concentric crosses. Either piston can be suspended from the bearings of the inclined shafts indirectly, through the inclined shafts and the crosses, avoiding any touching with the other piston and the casing. The arrangement improves the balance of the engine, rids the bearings of the rotor-pistons from heavy idle loads, allows lighter and more robust structure. The power is shared between the two counter-rotating shafts. The arrangement fits to divided load applications, like portable flyers, REM. | 07-18-2013 |
| 20140186204 | ROTARY PISTON ENGINE INCLUDING A PISTON ASSEMBLY, VEHICLE INCLUDING THE ROTARY PISTON ENGINE AND A MANUFACTURING METHOD FOR THE PISTON ASSEMBLY - A piston assembly is disclosed. In one aspect, the piston assembly includes a rotary piston, wherein the rotary piston comprises a first axis of rotation, a central bore having bore axis and at least two curved first constraint surfaces, and wherein the bore axis substantially corresponds to the first axis of rotation. The piston assembly also includes a substantially hollow-cylindrical bearing ring configured to be at least partially inserted in the central bore. The piston assembly further includes at least one fuse body configured to connect the rotary piston and the bearing ring, and to transmit, at least temporarily, a force in the two opposite axial directions relating to the first axis of rotation between the rotary piston and bearing ring. | 07-03-2014 |
| 20150322946 | ECCENTRIC SCREW PUMP - An eccentric screw pump, comprising a rotor that extends along a longitudinal axis of the rotor from a drive end to a free end, a stator housing with an internal cavity that extends along the longitudinal axis from a stator inlet opening to a stator outlet opening and that is designed to accommodate the rotor, a drive motor with a drive shaft that is coupled with the rotor to transmit a torque, a first cardan joint which is placed within the transmission of the torque between the drive shaft and the rotor, and a stator outlet flange that is arranged in flow direction behind the rotor. The stator outlet flange comprises a flange connection plane that is oriented non-vertically to the longitudinal axis. | 11-12-2015 |
| 418159000 |
ADJUSTABLE WORKING CHAMBER PERIPHERAL WALL CONTROLS WORKING FLUID FLOW | 3 |
| 20100080724 | TWO STAGE PRESSURE REGULATION SYSTEM FOR VARIABLE DISPLACEMENT HYDRAULIC PUMPS - A pump having a housing with an actuator member positioned inside for controlling the flow generated by the pump. A first decrease port is connected to the housing and has a surface area in operable contact with the actuator member. A second decrease port is connected to the housing and has a surface area that is operable contact with the actuator member. A valve is connected to the second decrease port for controlling the flow of fluid to the second decrease port. A suction passage is connected to the housing and drawings fluid to the housing using the actuator member. A discharge passage is connected to the housing so that fluid providing an exit for fluid that has been pressurized by the actuator member. | 04-01-2010 |
| 20130045124 | REVOLVING VANE EXPANDER - An example revolving vane expander includes a cylinder. A rotor is housed within the cylinder to establish a working chamber between the cylinder and the rotor. The rotor is eccentrically mounted relative to the cylinder. A vane is secured to the cylinder or the rotor. The vane is slidably receivable within a slot established in the other of the cylinder or the rotor. The vane is configured to link rotational movement of the cylinder and the rotor. | 02-21-2013 |
| 20160252090 | VARIABLE DISPLACEMENT LUBRICANT PUMP | 09-01-2016 |
| 418220000 |
HELICAL WORKING MEMBER | 2 |
| 20150345494 | VACUUM PUMP AND METHOD OF MANUFACTURING VACUUM PUMP - A vacuum pump comprises a cylindrical rotor; a cylindrical stator which discharges gas in cooperation with the rotor; and a tubular base to which the stator is fixed. The stator has no fitting structure with respect to the base and is fixed to the base in a concentric state. A pin hole is formed on the stator and the base respectively, and a positioning pin for achieving the concentric state is inserted into each pin hole. | 12-03-2015 |
| 20160102664 | UNIAXIAL ECCENTRIC SCREW PUMP - A uniaxial eccentric screw pump for rotating a rotor about its axis and revolving the rotor without involving complicated operations and control is provided. The uniaxial eccentric screw pump includes a rotor drive mechanism capable of revolving a rotor while rotating the rotor about its axis. The rotor drive mechanism includes a rotation power transmission member rotatable about a predetermined center axis, and a revolution track formation member capable of revolving a proximal shaft portion of the rotor while allowing rotation of the proximal shaft portion about its axis. The rotor drive mechanism distributes power output from the same motor in parallel and transmit the power to the rotation power transmission member and the revolution track formation member, enabling the rotation power transmission member and the revolution track formation member to rotate about their axes while being synchronized mechanically, and enabling the rotor to revolve while rotating about its axis. | 04-14-2016 |
| 418156000 |
RESILIENT WORKING MEMBER, CYLINDER OR PARTITION | 2 |
| 20160108733 | A SILENT GEAR PUMP OR MOTOR SUPPRESSING TROUBLES OF TRAPPING FLUID - Fluid delivery devices using a pair of meshed external gears, in spite of no reciprocating component for fluid delivery enabling low rotational vibration, the high noise due to the trapping phenomenon, and the teeth bouncing contact due to undesired large backlash heretofore afforded in the gear manufacturing process, restrict the employments in the industrial field requiring quiet environment such as electric motor vehicles or room services. | 04-21-2016 |
| 20160201667 | SLIDING MEMBER FOR PUMP AND PUMP OPERATION STATE DETECTION SYSTEM | 07-14-2016 |
| 418253000 |
INTERCONNECTED VANES | 2 |
| 20130011292 | DUAL ROTOR PUMP - A pump includes a pump body defining first and second cavities. First and second rotors are disposed in the first and second cavities between an inlet passage and an outlet passage and are in sealing relationship with each other during rotation of the rotors. A drive transmission mechanism is coupled to the first and second rotors for rotating the rotors in opposite directions. During a revolution of the first rotor, a vane projecting from the first rotor emerges from a recess of the second rotor, passes the inlet passage and the outlet passage, and enters a recess of the second rotor, while the inlet passage remains sealed from the outlet passage. | 01-10-2013 |
| 20120034125 | VANE PUMP WITH IMPROVED ROTOR AND VANE EXTENSION RING - A fluid vane pump is provided which includes a housing providing a generally cylindrically walled control volume wherein the control volume has an inlet and outlet. A rotor is provided having a rotatable axis within a cylindrical wall control volume. The rotor has a plurality of radially movable vanes operatively associated with the cylindrical wall. A single vane ring is provided which is operatively associated with the rotor having an outer radial surface contacting the inner radial edges of the vanes. | 02-09-2012 |
| 418068000 |
ROTATING INTERNAL MEMBER ROTATES AND OSCILLATES OR RECIPROCATES | 2 |
| 20090185937 | POSITIVE-DISPLACEMENT ROTARY MACHINE - The invention relates to rotary machines provided with nonparallel axes of a rotor and pistons. The inventive positive-displacement rotary machine comprises a body, the working surface of which is embodied in the form of a part of a segment of sphere, a rotor which is provided with a working surface of revolution and which is arranged in the body in such a way that it is rotatable, a ring-shaped concentric working cavity formed by the body and the rotor, a separator which is embodied in the form of a wobble plate, is fixedly arranged in the body and divides the working cavity into two parts. The working surface of the rotor is provided with at least one slot which is embodied along the geometrical axis of rotation thereof and in which a piston in the form of a part of disk is placed in such a way that it is enabled to perform rotational oscillations in the plane thereof. Each piston is provided with a sealable through-slot for the separator passage. At least one through passage, which makes it possible to position input and output ports on the opposite sides of the separator by mutually spacing them along the axis of the rotor, is embodied on one of the areas of the separator, thereby simplifying the combination of stages. Said inventions make it possible to increase the synchronising reliability of the working members of a spherical machine and to use it in a down-hole high-speed multistage high-pressure pump. | 07-23-2009 |
| 20150125331 | DISPLACEMENT PUMP - A displacement pump with a pot-shaped housing, a rotor which is swivel-mounted about a rotation axis inside the housing, and two blades which are guided in a movable manner insider the rotor, wherein the pot-shaped housing includes an inner peripheral wall which has a sealing portion for tightly adjoining the rotor and a chamber portion for tightly adjoining the blade tips, as well as for dividing the internal space of the housing into chambers. The rotor has two blade receptacles for receiving and guiding the blades, wherein each internal radially extending blade tip restricts a pressure chamber in the respective blade receptacle. Both pressure chambers are fluid-connected to one another via a connection element, wherein the total volume of both pressure chambers and the connection element remains at the same level during a rotation of the rotor, at least while the blade tips are attached to the chamber portion. | 05-07-2015 |
| 418040000 |
SPEED CONTROLLED | 1 |
| 20110262289 | VANE AIR MOTOR - A vane air motor is disclosed which is configured to prevent grease in a radial bearing from leaking into a rotor chamber. The vane air motor has a motor housing ( | 10-27-2011 |
| 418221000 |
MOVING ABUTMENT AND VANE | 1 |
| 20150354565 | VARIABLE DISPLACEMENT LUBRICANT PUMP - A variable displacement lubricant pump for providing a pressurized lubricant for an internal combustion engine includes a control ring configured to be shiftable, a pump rotor comprising a plurality of slidable vanes which are configured to rotate in the control ring, a hydraulic control chamber configured to directly actuate the control ring, a valve bore, and a temperature control valve configured to connect or disconnect the temperature control opening to an atmospheric pressure. The hydraulic control chamber comprises a side wall comprising a temperature control opening arranged therein. The temperature control valve comprises a switching strip which comprises a switching temperature. The switching strip is configured to be in an open position if a temperature is below the switching temperature, and to be in a closed position if the temperature is above the switching temperature so as to close the valve bore. | 12-10-2015 |
| 418235000 |
WEAR ELEMENTS OR ANTIFRICTION MEANS IN VANE OR ABUTMENT SLOT | 1 |
| 20130129555 | Contact Element For Rotary Piston Pump - The rotary piston pump includes two counter-rotating rotary pistons and an oval pump housing. Every rotary piston has a rotary piston vane and is provided with a contact element. The contact points of the flanks of the two rotary pistons in which the two rotary pistons form a friction pairing are provided with a contact element each. The interior of the oval pump housing is likewise provided with an exchangeable contact element. | 05-23-2013 |
| 418236000 |
NON-RADIALLY POSITIONED SLIDING VANE OR ABUTMENT | 1 |
| 20150147216 | GAS COMPRESSOR - A compressor body ( | 05-28-2015 |
| 418252000 |
WITH PROVISION FOR QUICK VANE REPLACEMENT | 1 |
| 20130251583 | Rotor and hydraulic motor including the rotor - The present invention discloses a rotor for hydraulic motor comprising a plurality of vanes spacedly apart inserted into a plurality of vane slots formed on the rotor respectively, at least one groove is provided in outer edge of the rotor between the neighboring vanes, and extending inside along the axial direction of the rotor. wherein the groove has a first inner side and a opposite second inner side, and the first inner side of the groove is comb teeth-shaped. The rotor and the hydraulic motor using the rotor according to the present invention increases force bearing area by providing grooves on the rotor, so as to increase power output, lower the manufacturing cost, reduce the moment of inertia, and improve the starting speed and rotating speed. | 09-26-2013 |
| 418032000 |
SELF-ACTING UNIDIRECTIONAL FLOW WITH REVERSE ROTATION OR REVERSE FLOW WITH UNIDIRECTIONAL ROTATION | 1 |
| 20120177520 | REVERSIBLE GEROTOR PUMP - A reversible gerotor pump for a machine having a drive shaft is provided, the pump including a housing, an offset ring, and an inner and outer gear. The offset ring is disposed in the housing and includes a tab extending radially from an outer periphery. The outer periphery of the offset ring defines a first axis in common with the axis of a drive shaft. The inner periphery of the offset ring defines a second axis that is slightly offset from the second axis. The axis of the outer gear moves relative to the axis of the inner gear to allow pumping action in both rotational directions using the same suction and line cavities for both directions. | 07-12-2012 |
| 418004000 |
WORKING MEMBER OR CYLINDER SURFACE HAS ALTERNATE LINEAR AND CURVILINEAR MOVEMENT (E.G., ENDLESS) | 1 |
| 20110129375 | WORK EXTRACTION FROM DOWNHOLE PROGRESSIVE CAVITY DEVICES - A progressive cavity device and method of use are provided, the progressive cavity device comprising a hollow stator having a rotor shaft positioned therein. The rotor shaft is provided with rotating motion drive connections at both ends thereof. | 06-02-2011 |
| 418207000 |
RELATIVELY MOVING WORK TRANSMITTING BARRIERS MOVE IN SEPARATE INTERSECTING CHAMBERS | 1 |
| 20100111743 | Meshing Surfaces For Intersecting Vanes - The invention provides a toroidal intersecting vane machine incorporating intersecting rotors to form primary and secondary chambers whose porting configurations minimize friction and maximize efficiency. Specifically, it is an object of the invention to provide a toroidal intersecting vane machine that greatly reduces the frictional losses through meshing surfaces without the need for external gearing by modifying the function of one or the other of the rotors from that of “fluid moving” to that of “valving” thereby reducing the pressure loads and associated inefficiencies at the interface of the meshing surfaces. The inventions described herein relate to these improvements. | 05-06-2010 |
| 418046000 |
WITH REMOVAL OR ACCOMMODATION OF SOLID FOREIGN MATERIAL IN WORKING FLUID | 1 |
| 20100215532 | VACUUM PUMP - A vacuum pump according to the invention includes a cylindrical pump casing for accommodating a rotor, a ring fitting part provided at an inlet area of the pump casing, a C-shaped ring of character C configuration devoid of portion of a ring member, fitted to the ring fitting part, and a protective net for stopping foreign matter, fitted to the inlet area by means of the C-shaped ring. As both ends of the C-shaped ring are formed so that the ends of the C-shaped ring are arranged overlapping each other in a circumferential direction in a state where the C-shaped ring is fitted to the pump casing, the deformation of the protective net for prevention of foreign matters is suppressed when air rushes into a pump casing, and therefore the dropping off of the protective net can be prevented. | 08-26-2010 |
| 418208000 |
MOVABLE INTERMEDIATE PARTITION ENGAGES PERIPHERIES OF PLURAL SPACED WORKING MEMBERS | 1 |
| 20130071281 | COMPRESSER, ENGINE OR PUMP WITH A PISTON TRANSLATING ALONG A CIRCULAR PATH - Described herein is a device comprising: a chamber wall comprising outer and inner surfaces, wherein the inner surface encloses a lobed chamber with a plurality of lobes and the inner surface comprises segments of arcuate surfaces, each of the segments of arcuate surfaces being tangent with its immediate neighboring segments, and wherein the chamber wall further comprises channels connecting the outer surface and the inner surface of the chamber wall and/or channels through an end surface of the chamber wall; a lobed piston configured to translate along a circular path relative to the chamber wall, the outer surface of the piston and the inner surface of the chamber wall engaged during translation; and holes fluidly connected to the lobed chamber and configured to allow fluid discharge from the lobed chamber through the holes and to prevent fluid flow into the lobed chamber through the holes. | 03-21-2013 |
