| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 418140000 | Seal element between working member and cylinder | 39 |
| 20080274001 | Rotary Expander - The upper and lower end surfaces ( | 11-06-2008 |
| 20100034685 | SEAL FOR A ROTARY VANE PUMP - A pump includes a housing and a shaft rotatable about an axis. The shaft has a shaft diameter and has a portion disposed within the housing. A plurality of retractable vanes is coupled to the shaft and each vane includes a first end that contacts the housing. A seal element is positioned to define a seal between the shaft and the housing. The seal element includes a first bushing, a second bushing, and a dry seal assembly including a wiper that defines a diameter that is smaller than the shaft diameter. | 02-11-2010 |
| 20100247362 | Gear Pump - A gear pump includes: a pump chamber formed in the housing; a gear disposed in the pump chamber; a side plate disposed between a wall of the pump chamber and the gear, and arranged to seal a side surface of the gear, the side plate including an annular receiving portion formed between the wall of the pump chamber and the side plate, the receiving portion having a bottom portion and a side wall portion; a seal member disposed in the receiving portion of the side plate, and arranged to liquid-tightly separate the low pressure chamber and the high pressure chamber of the pump chamber; a pressure introducing section arranged to introduce a pressure generated by the pump operation, to a space between the bottom portion of the receiving portion and the seal member, and thereby to separate the seal member away from the bottom portion of the receiving portion. | 09-30-2010 |
| 20100310399 | Self-Triggering Rotor for Pneumatic Paddle Motor - A rotor for pneumatic paddle motor is described, comprising a plurality of segments ( | 12-09-2010 |
| 20110142706 | NOISELESS PRESSURE BLOWER - The present invention relates to a noiseless pressure blower including a main body having an inlet port and an outlet port; a pressing member which rotates to suck in fluid from the inlet port; a control member which rotates in contact with the pressure member to prevent the sucked in fluid from flowing to the inlet port; and an interlocking means for transmitting rotational force to the pressure member and the control member. The main body has two cylinders that communicate with each other. The pressure member includes a pressure rotating shaft which rotates by the interlocking means, and a spiral pressure plate provided on the pressure rotating shaft. The control member includes a control rotating shaft which rotates by the interlocking means, and a control body provided on the control rotating shaft, and which rotates in linear contact with the pressure plate. | 06-16-2011 |
| 20110293458 | VANE CELL PUMP - The invention relates to vane cell pumps having a rotor mounted in a pump housing and driven by a shaft, multiple vane plates mounted in the outer circumference of this rotor, and an outer ring that surrounds the rotor and the vane plates, whereby this ring is disposed either directly in the pump housing, or in a setting ring that can be moved in the pump housing, along predetermined paths. The purpose is to develop a new type of vane cell pump having a new type of pump chamber geometry, which guarantees optimal, complete filling, in terms of flow technology, of the pump chambers, particularly at speeds of rotation in the range from 4500 rpm to beyond 6000 rpm, and furthermore is easy to manufacture, in terms of production technology. The vane cell pump according to the invention, having transverse grooves disposed in the cylinder mantle surface of the rotor, between the bearing grooves of the vane plates, running over the entire rotor width, disposed parallel to the bearing grooves of the vane plates, spaced apart from the bearing grooves by a bearing crosspiece, is characterized in that these transverse grooves have a non-symmetrical cross-section progression, which has a low point in each cell chamber, which point is always disposed behind the cell chamber center axis, seen in the direction of rotation. | 12-01-2011 |
| 20120189481 | ROTOR TYPE PUMP - A rotor type pump is provided. A rotor rotates and closely contacts an inner surface of a chamber, and a cam controls a sealing part, so that during a compression procedure, the sealing part, a convex surface of the rotor, and an inner surface of the chamber form a substantially hermetic space, and when a gas in the chamber is compressed to a set pressure, the compressed gas is guided out. Therefore, a smooth surface of the rotor closely contacts the inner surface of the chamber, and the gas in the chamber is compressed in a rotational manner, in which the to-and-fro movement of a piston is not required, and a dead point is prevented, so that operation is smooth and noise is not easily generated. Further, the rotor type pump does not need to use a lubricating fluid and offers extremely large compression capacity and excellent efficiency. | 07-26-2012 |
| 20160010645 | COMPACT STRUCTURE OF GEAR PUMP | 01-14-2016 |
| 20160201668 | A Concentric Rotary Fluid Machine | 07-14-2016 |
| 418141000 | Labyrinth | 2 |
| 20090041604 | Vane Machine With Stationary and Rotating Cylinder Parts - Vane machine with cylinder stationary and rotating parts is intended for use as a driving or a working machine, utilising compressible or non-compressible media as the working fluid. The vane-machine basic embodiment comprises: cylinder stationary part (A), cylinder rotating parts (B), rotor (C), covers (D), and vanes with grooves (F). | 02-12-2009 |
| 20160177951 | SECTIONAL SEALING SYSTEM FOR ROTARY SCREW COMPRESSOR | 06-23-2016 |
| 418142000 | On working member | 22 |
| 20080240965 | ROTOR SHAFT SEALING METHOD AND STRUCTURE OF OIL-FREE ROTARY COMPRESSOR - A rotor shaft sealing method for an oil-free rotary compressor is provided, with which occurrence of lubrication oil intrusion into the compression chamber of the compressor which is liable to occur when negative pressure is produced in the compression chamber, is prevented. With a rotor shaft sealing structure composed such that two shaft seal means ( | 10-02-2008 |
| 20080253915 | Self-Aligning Rotary Pistone Machine - A rotary piston machine comprising a cylinder ( | 10-16-2008 |
| 20080260562 | Water-Injected Screw Compressor Element - Improved water-injected screw compressor element which mainly consists of a housing ( | 10-23-2008 |
| 20090081063 | Rotary fluid-displacement assembly - A rotary fluid-displacement assembly having a housing and a rotor positioned within an internal cavity of the housing. The rotor being configured to rotate about a rotor axis of rotation eccentric to a housing longitudinal axis. A gate is also provided that is slidably mounted therewith the rotor and movable axially about and between a first position, in which a distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor. The distal end of the gate being constrained to be spaced proximate from the inner wall surface of the housing as the rotor rotates about the rotor axis of rotation. | 03-26-2009 |
| 20090081064 | Rotary compressor - A rotary compressor having a housing and a rotor positioned within an internal cavity of the housing. The rotor being configured to rotate about a rotor axis of rotation eccentric to a housing longitudinal axis. A gate is also provided that is slidably mounted therewith the rotor and movable axially about and between a first position, in which a distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor. The distal end of the gate being constrained to be spaced proximate from the inner wall surface of the housing as the rotor rotates about the rotor axis of rotation. | 03-26-2009 |
| 20100040499 | SCREW PUMP ROTORS AND RING SEALS FOR SCREW PUMP ROTORS - A pump rotor for a screw pump, comprising a shaft, a thread on the shaft, the thread comprising a groove disposed on an outer surface thereof, and a seal disposed in the groove. The seal and the groove are configured to retain the seal in the groove while allowing radial displacement of the seal with respect to the thread as the pump rotor is deflected. | 02-18-2010 |
| 20100104462 | PUMP OR MOTOR - The invention relates to a pump or motor for liquid or gaseous media. The pump or motor has a shaft, which faces a working part, and has a common inclined sliding surface with the working part. The working part which limits the pump working chambers, wobbles in a positionally fixed housing. | 04-29-2010 |
| 20100150763 | Rotary Pump - A rotary pump device includes a stator chamber with a cylindrical inner wall having intake and exhaust ports therein, and a two-part, expanding rotor eccentrically mounted for rotation within the chamber. The rotor comprises two crescentoid bodies with end surfaces in sliding, mating contact. A spring rod is placed between the inner rotor body surfaces to maintain rotor contact points in continuous wiping contact with the chamber wall. A full intake/exhaust cycle occurs every 180° of rotor travel. | 06-17-2010 |
| 20100178189 | ROTARY EXPANDING OR COMPRESSING MECHANISM PROVIDED IN FLUID CHANNEL WITH BLADES FOR TRAVERSING SHAFT - This invention will involve in the technologies of fluid expanding or compressing on fluid channel, which belongs to the form of volume, and it has particularly decisive meaning on the reliability of the outstanding performance of bias cylinder rotary expansion or compressed mechanism with blades for traversing shaft. This mechanism is originally invented by me, but due to the rotational and technological factors, the reliability is not strong and the profit is not great, so I hereby make this invention. Because this configuration mechanism is very strong, and it seems similar, but in fact, there is a big difference between the features of this invention and the original invention. This invention includes a supporting frame, an import and export of the fluid channel, an un-round type curve barrel stator, a rotor with concave grooves, blades for traversing shaft, a round end cover, a member for transmitting force, and its features are movable wearable closed mechanisms whose outer surfaces and edges are constituted by arc lines whose the matching place between the blades for traversing shaft and the curve barrel stator, etc., so its name is changed as rotary expansion or compressed mechanism with blades for traversing shaft. Thus, this mechanism can go from the basic theory to industrial implementation to achieve the goal of energy conservation. | 07-15-2010 |
| 20120141315 | External Gear Pump - An external gear pump capable of achieving both a sealing property and a sliding property is disclosed. The external gear pump includes a pair of rotating shafts that are respectively pivotally supported by bearings provided in a casing; at least a pair of gears that are respectively fixed to the pair of rotating shafts and are externally meshed with each other; a side plate that is provided in sliding contact with one side surfaces of the pair of gears; and a seal block integrally including a side surface sliding part and a tooth tip sliding part. The external gear pump further includes movement restrictors on both sides of a straight line connecting axes of the pair of gears, and the movement restrictors restrict the seal block from moving with respect to the casing on a plane orthogonal to the rotating shafts. | 06-07-2012 |
| 20130011290 | ROTARY COMPRESSOR - A rotary compressor includes a cylinder having an annular cylinder space, a piston eccentrically disposed relative to the cylinder, and a drive shaft ( | 01-10-2013 |
| 20130251579 | IDAR-ACE INVERSE DISPLACEMENT ASYMMETRIC ROTATING ALTERNATIVE CORE ENGINE - The disclosure provides engines or pumps that includes a rotatable shaft defining a central axis A, the shaft having a first end and a second end. The shaft can have an elongate first island disposed thereon. The first island can have a body with a volume generally defined between front and rear surfaces that are spaced apart. The front and rear surfaces can lie in a plane parallel to a radial axis R. The perimeters of the front and rear surfaces can define a curved perimeter surface therebetween. The engine or pump can further include a front side plate disposed adjacent to the front surface of the first island, and a rear side plate disposed adjacent to the rear surface of the first island. The engine or pump also includes a first contour assembly disposed between the front side plate and the rear side plate. | 09-26-2013 |
| 20140003988 | Seal Assembly for a Heat Engine | 01-02-2014 |
| 20140010696 | Axial Disc and Gear Pump with Axial Disc - An internal gear pump for a hydraulic vehicle brake system has axial discs which, by the exertion of pressure on the outer sides thereof, are pressed against gearwheels of the internal gear pump for lateral sealing, provided on the inner sides thereof with grooves through which the gearwheels convey brake fluid as they are driven in rotation, which brake fluid thereby passes, for lubrication, between the axial discs and the gearwheels of the internal gear pump. | 01-09-2014 |
| 20160061038 | ROTARY DEVICE INCLUDING A COUNTERBALANCED SEAL ASSEMBLY - A rotary device is provided. The rotary device includes a housing having a cylindrical inner surface and a rotor assembly mounted for rotation in the housing. The rotor assembly includes a rotor, at least one rocker pivotally coupled to the rotor, and a counterbalanced seal assembly. The rotor includes a central portion and a plurality of arms extending radially outward from the central portion. Each arm has a distal end disposed for sliding engagement with the inner surface. Pivoting of the rocker causes the rotor to rotate. The counterbalanced seal assembly is disposed at the distal end of at least of one of the arms, and includes a seal and a counterweight mechanism. The counterweight mechanism is configured to control a contact pressure exerted by the seal on the inner surface resulting from rotation of the rotor. | 03-03-2016 |
| 20160061039 | ROTARY DEVICE INCLUDING A COUNTERBALANCED SEAL ASSEMBLY - A rotary device is provided. The rotary device includes a housing having an inner surface and a rotor assembly mounted for rotation in the housing about an axis defining an axial direction of the rotary device. The rotor assembly includes a rotor and a seal assembly. The rotor includes a central portion and a plurality of arms extending radially outward from the central portion. Each arm has a distal end disposed for sliding engagement with the inner surface, and at least one of the arms has a channel defined therein. The seal assembly is disposed within the channel, and includes a seal, a base defining a seal channel configured to receive the seal, and a counterweight mechanism pivotally coupled to the base. The counterweight mechanism is configured to control a contact pressure exerted by the seal on the inner surface resulting from rotation of the rotor. | 03-03-2016 |
| 20180023392 | High Power Density and Efficiency Epitrochoidal Rotary Engine | 01-25-2018 |
| 418143000 | On working member circumferential periphery | 5 |
| 20080240966 | HYDRAULIC MACHINE - The invention concerns a hydraulic machine ( | 10-02-2008 |
| 20120315175 | Double Internal Gear Pump - A double internal gear pump has two internal gear pumps having a common pump shaft. A partition is formed between the two internal gear pumps, and the partition has a frustoconical circumferential surface which contacts an opposing surface in a sealing manner in a pump housing. Pump inlets and pump outlets can be led through the partition. The frustoconical circumferential surface of the partition is advantageous because it removes the necessity of pressing into the pump housing and canting the partition. In addition, a seal on the circumference of the partition is ensured with great reliability. | 12-13-2012 |
| 20130202472 | Oval Chamber Vane Pump - A rotary device includes a housing having a tubular surface. The surface has an throughpassing axis and first and second ports. A rotor body rotates about the axis and has a plurality of slots extending generally radially from the axis. A vane is mounted in each slot for reciprocation such that the surface can be swept by the vanes as the body rotates. A seal permits fluid to flow into and out of the device substantially only via the first and second ports such that the vanes create chambers which decrease in volume when in communication with the first port and increase in volume when in communication with the second port. The tubular surface is oval in cross-section. | 08-08-2013 |
| 20130216417 | ROTARY LOBE PUMP WITH WIPER BLADES - A positive displacement rotary pump with an improved impeller design integrating replaceable wiper inserts. The impeller generally has or more lobes and an equal number of conjugate surfaces. Each lobe has an arcuate peripheral end comprising a plurality of wiper blades. The wiper blades improve efficiency by making a seal with a pump chamber or the conjugate surface on the other impeller as it rotates. The wiper blades are arranged such that constant and successive contact between wiper blades and impellers is achieved. | 08-22-2013 |
| 20140140880 | ROTARY FLUID MACHINE - A rotary fluid machine | 05-22-2014 |
| 418144000 | Between adjacent cylinder and working member sides | 6 |
| 20090297383 | OIL ROTARY VACUUM PUMP AND MANUFACTURING METHOD THEREOF - An oil rotary vacuum pump of mechanical type is filled with a requested amount of oil at the end of the manufacturing process, then it is stored and then shipped to the user, letting the user to avoid an operation of introducing the proper amount of oil into the pump. The oil leakage is prevented by securing the suction and/or exhaust ports of the pump, which are sealed by means of a removable sealing member, for instance by means of a membrane. | 12-03-2009 |
| 20110103992 | GEAR PUMPS AND METHODS FOR USING GEAR PUMPS - Gear pumps and methods of using the gear pumps are provided. In general embodiments, the pumps comprise a gear housing defining a passage and having an inlet and an outlet and one or more gears contained within the gear housing. The gears can comprise corresponding bearings that are movably engaged with the gear. The bearings are separated from the passage of the gear housing by one or more seals. The bearings can be contained within a bearing housing attached to the gear housing. | 05-05-2011 |
| 20120034123 | HIGH EFFICIENCY FIXED DISPLACEMENT VANE PUMP - A vane pump for an automatic transmission includes a housing which may be spaced from the axis of the transmission input shaft axis and driven by a chain or gear train driven by the torque converter hub or disposed on and about the axis of the transmission input shaft and driven at engine speed. The vane pump includes a pair of port plates which reside on the end faces of a pump body having a cylindrical chamber which receives an eccentrically disposed rotor that is coupled to a stub shaft. The rotor includes two halves that define a central chamber. The rotor also includes a plurality of radial slots which receive a like plurality of vanes. The outer ends of the vanes are in contact with the wall of the cylindrical chamber and the inner ends are in contact with a single vane ring received within the central chamber. | 02-09-2012 |
| 20120219445 | SEAL RETAINING SLEEVE FOR GEAR PUMP - A shaft assembly includes a shaft with a first radial shoulder and a second radial shoulder along a shaft axis. A seal retaining sleeve is defined around the shaft axis to position a shaft seal. A retainer plate at least partially between the first radial shoulder and the second radial shoulder is adjacent to the seal retaining sleeve to position and provide access to the seal retaining sleeve and shaft seal. | 08-30-2012 |
| 20130108499 | VANE CELL MACHINE | 05-02-2013 |
| 20140030129 | Axial washer for a gear-type pump comprising an axial washer of this type - An axial washer of a gear-type pump, in particular an internal gear pump, includes a seal which surrounds a pressure area of the axial washer. The seal is applied to the axial washer as a free-flowing bonding mass that bonds with the axial washer. | 01-30-2014 |
