Class / Patent application number | Description | Number of patent applications / Date published |
092140000 | WITH LINKAGE OR TRANSMISSION HAVING RELATIVELY MOVABLE MEMBERS | 26 |
20090272259 | MOTION TRANSLATION MECHANISM - This disclosure concerns machines that convert rotating motion to reciprocation, and vice-versa, and more particularly, but not exclusively, to reciprocating piston machines. Some embodiments include a crankshaft defining a crankshaft-drive and at least one radially extending piston-journal spaced from the crankshaft-drive, and a piston configured to pivotally engage the piston-journal. The piston defines a cylindrical head and an elongate body. Some embodiments further include a drive-member defining a central-axis-of-rotation and being rotatably engageable with the crankshaft-drive. Some embodiments also include a block defining one or more cylinders for receiving one or more pistons. The drive-member rotates when the piston reciprocates, and vice-versa. | 11-05-2009 |
20100180762 | IMPROVED SCOTCH YOKE ENGINE OR PUMP - An improved scotch yoke engine of pump including a piston joined to a yoke structure wherein the piston ( | 07-22-2010 |
20100236401 | METHOD OF CALIBRATING A CONNECTING ROD ARRANGEMENT AND CONNECTING ROD ARRANGEMENT - The invention relates to a method of calibrating a connecting rod arrangement comprising a crankshaft eye and a connecting rod eye. In order to achieve the best possible parallelism between the connecting rod eye and the crankshaft eye a controlled energy input occurs in at least one predefined surface area of the connecting rod, so that outside a neutral axis a local structural change and thus a tension in the connecting rod occurs. | 09-23-2010 |
20110023705 | SCOTCH YOKE ENGINE OR PUMP - A scotch yoke engine or pump with a female Vee land means ( | 02-03-2011 |
20110197754 | CRANKSHAFT-LINK PISTON MACHINE - The invention relates to mechanical engineering, in particular to piston machines and mechanisms for converting the movement of the pistons thereof into shaft rotation. The technical result of the invention involves increasing the operational reliability, extending the service life, improving the specific mass and dimensional characteristics and enhancing the effectiveness of a machine. The essence of the invention is that the piston and the crank of a piston machine are interconnected by means of a hinged joint with at least a flat hinge which enables the piston to self-center along the surface of a cylinder owing to the movement of the piston with respect to the crank in any direction on a plane that intersects the longitudinal axis of the cylinder. The surfaces of the crank that take up reactive torque are constricted by rollers with synchronized toothed wheels. | 08-18-2011 |
20110252960 | MECHANICAL VENTILATOR - A reciprocating device, comprising:
| 10-20-2011 |
20120017757 | INERTIA FREE DRIVE FOR CRYOGENIC PISTON EXPANDER - A cryogenic piston expander may reduce or eliminate the inertia of system, as compared to conventional cryogenic piston expanders that utilize a heavy flywheel. The cryogenic piston expander of the present invention may use a single bent running from a motor to a large sprocket mounted on a main shaft of the cryogenic piston expander. | 01-26-2012 |
20120042774 | DISPLACEMENT ASSEMBLY FOR A FLUID DEVICE - A displacement assembly includes a rotor and a plurality of reciprocating members in engagement with the rotor. The displacement assembly further includes a ring assembly. The ring assembly defines a cam surface that is in engagement with the reciprocating members. The ring assembly has a first ring and an axially adjacent second ring with at least one of the first and second rings being adapted for selective movement relative to the other between a neutral position and a displaced position. The first ring has a first ring portion defining a bore that has an inner surface. The second ring has a second ring portion defining a bore that has an inner surface. A first circumferential portion of the inner surface of the first ring portion and a second circumferential portion of the inner surface of the second ring portion define the cam surface in the displaced position. | 02-23-2012 |
20120097025 | DRIVE DEVICE FOR OSCILLATING POSITIVE-DISPLACEMENT MACHINES - The present invention concerns a drive mechanism for oscillating positive-displacement machines such as for example diaphragm pumps comprising an eccentric shaft and a plurality m of piston rods, wherein the piston rods are connected to the eccentric shaft in such a way that rotation of the eccentric shaft produces an oscillating linear movement of the piston rods. To provide a corresponding drive mechanism which avoids or at least reduces the described disadvantages it is proposed according to the invention that the eccentric shaft and the piston rod are connected together by way of a sliding unit guide. | 04-26-2012 |
20120180652 | Hybrid Type Air-Compressor Including Combination of Eccentric Shaft and Cross-Slider Mechanism - Disclosed is a hybrid type air-compressor, which has a main body including a cylinder having upper and lower portions, a motor assembly including an eccentric shaft passing through a side surface of the main body to eccentrically rotate in the cylinder, a first communication part covering an upper portion of the cylinder of the main body and introducing air to discharge the air to the upper portion of the cylinder, a second communication part covering a lower portion of the cylinder of the main body and introducing air to discharge the air to the lower portion of the cylinder; and an air compressing means connected to the eccentric shaft of the motor assembly and vertically moving in the cylinder to alternately compress air introduced into the upper and lower portions of the cylinder. | 07-19-2012 |
20120210866 | Reciprocating piston mechanism with extended piston offset - The reciprocating piston mechanism with an extended piston offset is provided. The mechanism is of the type that contains at least one cylinder having a longitudinal axis, at least one piston that has a pivot pin and is slidingly installed in the cylinder, a main driveshaft having a central axis, which is offset at a distance from the longitudinal axis of the cylinder, a circular cylindrical body, e.g., a circular eccentric, which is non-rotationally secured on the main drive shaft and a rocker arm, which in essence is a second order lever. The lever is pivotally mounted on the circular eccentric. The mechanism is also provided with a connecting rod that connects the cylinder to one arm of the rocker arm/lever. The other arm of the rocker arm/lever has a roller that is guided in a confined pathway and works as a fulcrum of the lever and a stabilizer/rudder at the same time. | 08-23-2012 |
20120247320 | RECIPROCATING FLUID MACHINES - A scotch yoke type fluid device in which the pistons are decoupled from each other is provided. Each piston of the device has its own pair of sliding surfaces and its own slider. The sliding surface of each piston is disposed on the same side of a big end bearing of a crank. The main axis of the crank is movable along a path such that the pistons are neither substantially retarded nor advanced. The effective centre of mass of the crank, piston and slider remains stationary relative to the crank axis. Each piston includes a guide for constraining the piston to move along the piston axis. An intermediate member may interconnect the piston and the slides. | 10-04-2012 |
20120312158 | RING CAM AND FLUID-WORKING MACHINE INCLUDING RING CAM - A ring cam for a fluid-working machine is formed from a plurality of segments. The segments comprise a leading cooperating formation which has a piston facing surface which forms part of the working surface, at a trailing end, and which is recessed from the working surface at a leading end, and a trailing cooperating formation which has a piston facing surface which forms part of the working surface at a leading end, and which is recessed from the working surface at a trailing end. The segments having piston facing surfaces which are in compressive stress such as to partially or fully compensate for tensile stress arising from the action of rollers in use. The segments form a wavelike cam surface and attachment means are provided, through the working surface, on whichever of the leading or trailing surfaces thereof is subject to lowest forces from pistons in use. | 12-13-2012 |
20130047838 | FLUID ACTUATOR - A fluid is supplied and discharged to and from a cylinder. A body portion is fixed to a fixed-side structure, and the cylinder is provided integrally with the body portion. A piston defines a cylinder chamber inside the cylinder and slides on an inner wall of the cylinder. A rod is provided integrally with the piston and is displaced so as to extend from and contract into the cylinder. A link member is installed parallel to the axial direction of the cylinder or installed so as to extend obliquely to a direction parallel to the axial direction of the cylinder, and a first end of the link member is pivotably connected to a movable-side structure. A connecting member is fixed to the rod, and a second end of the link member is pivotably connected to the connecting member. | 02-28-2013 |
20130061744 | OFFSET CAM FOR PISTON PUMP - A pump assembly comprises a cam and a piston. The cam rotates in a plane about an eccentric axis, and has a circumferential side wall. The piston engages the circumferential side wall of the cam, and runs along a piston axis which lies in the plane of the cam. The piston axis is parallel to but not coincident with a reference line perpendicular to and intersecting the eccentric axis. | 03-14-2013 |
20130061745 | REMOVABLE SHIM CLIP FOR ADJUSTABLE PISTON PUMP - A pump assembly comprises a base, a cam, a cylinder, a piston, and a shim clip. The cam rotates about a rotational axis with respect to the base. The cylinder attaches to the base, and has an inlet port and an outlet for fluid. The piston is reciprocally driven by rotation of the cam to draw fluid into the cylinder through the inlet port during a fill stroke, and to close the inlet port and pump fluid in the cylinder toward the offset during a pump stroke. The shim clip is removably insertable between the cylinder and the base to increase the distance between the inlet port and the rotational axis. | 03-14-2013 |
20130228068 | HIGH PRESSURE DEVICE FOR FLUID MEDIA - Cylinder unit of a high pressure pump for a fluid. Cylinder unit includes a cylinder formed by at least two concentric tubular components coupled by a shrink connection. A flange part with sealing system is detachably connected on one side of the cylinder, and sealing system has a movable plunger and a bearing bushing. A valve body is connected on other side of the cylinder. Bearing bushing and radially outermost component are arranged to bear against flange part to form an intermediate gap, a spring device has a distal portion supported on outermost component of the cylinder and a proximal portion on an outside of bearing bushing, and a valve body against which an other side of the cylinder bears are included. The tubular components have a metallic connection in a region of a surface bearing between the valve body and the cylinder. | 09-05-2013 |
20130333552 | DEVICE FOR RECEIVING AND DISPENSING HYDRAULIC FLUID, IN PARTICULAR FOR A HYBRID OR ELECTRIC VEHICLE, AND BRAKING SYSTEM FOR A HYBRID OR ELECTRIC VEHICLE - A device is described for receiving and dispensing hydraulic fluid, in particular for a hybrid or electric vehicle, having a cylinder, a piston, which is movable in the cylinder for receiving and dispensing hydraulic fluid, and a drive unit; a ramp mechanism being provided, having at least one ramp on which at least one rolling element rolls for moving the piston, the ramp mechanism being situated between a face of the piston and a face of a gearwheel driven by the drive unit. | 12-19-2013 |
20130333553 | 3-STROKE/6-STROKE ROCKET JET ENGINE - The present invention has an object to provide an engine and a pump useful in three-stroke/six-stroke rocket/jet engine pump and the like in each of a speed volume type and an isokinetic circular rotation internal combustion engine type which operates only by isokinetic circular rotation similarly to a jet engine, has no pressure leakage, has all the increased/decreased pressures immediately work as a rotation torque and is excellent in super-high speed and super-low speed limitation performance, silence and fuel-cost saving performances. | 12-19-2013 |
20130340608 | JOINT MECHANISM - In the joint mechanism, when connecting a plunger to a piston, after engaging members of a plunger-side engaging region in a retracted state pass through a first engaging wall region of a piston-side engaging region, the engaging members of the plunger-side engaging region come into a projected state in a second engaging wall region and the projected state of the engaging members is fastened by a fast block, and thereby, the plunger-side engaging region engages with the piston-side engaging region. | 12-26-2013 |
20140000450 | Gas Spring | 01-02-2014 |
20140060319 | ADJUSTABLE LINKAGE FOR VARIABLE DISPLACEMENT - An apparatus comprising a crank-slider linkage and a rocker link. The crank-slider linkage has a crank coupled to the slider by a jointed connecting rod. The jointed connecting rod has a first link and a second link. The first link is coupled to the second link by a first revolute joint. The first link is coupled to the crank and has a longitudinal axis. The rocker link has a rocker end and a ground end. The rocker end is coupled to the jointed connecting rod. The ground end is coupled to ground by a second revolute joint. The rocker link and the second link are disposed on a common side of the longitudinal axis. | 03-06-2014 |
20140116245 | CRANK CIRCULAR SLIDING BLOCK MECHANISM AND RECIPROCATING MEMBER, CYLINDER BLOCK, INTERNAL COMBUSTION ENGINE, AND COMPRESSOR - The invention provides a crank circular slider mechanism comprising multi-row reciprocating motion part and one-row reciprocating part: the multi-row reciprocating motion part has a guiding part which is divided by a longitudinal groove into two rows parallel to each other, respectively named by the first row of guiding section on which is provided a first hole receiving the circular slider; and the second row of guiding section on which is provided a second hole receiving the second circular slider, the one-row reciprocating motion part has a guiding part which can be inserted into the longitudinal groove of the multi-row reciprocating motion part along the thickness direction, so as to transverse vertically the multi-row reciprocating motion part, the guiding part is provided thereon with a hole receiving the middle circular slider, the first circular slider and the second circular slider are mounted in the same phase, the middle circular slider is sandwiched between the first circular slider and the second circular slider and is located with a 180 degree phase difference compared to the two circular sliders, the adjacent circular sliders being secured to each other. The invention also proposes a reciprocating motion element, an engine block, an internal combustion engine and a compressor. | 05-01-2014 |
20150075369 | OIL-FREE AIR COMPRESSOR FOR RAIL VEHICLES WITH AIR VENTILATION - An oil-free compressor for a rail vehicle includes a multi-piece compressor housing, a first piston cylinder supported in a first opening in the compressor housing, a second piston cylinder supported in a second opening in the compressor housing, a multi-piece crankshaft assembly supported by the compressor housing, and an optionally filtering air plenum in fluid communication with the compressor housing interior to provide a volume of air to the compressor housing interior. The crankshaft assembly is linked to pistons of the first and second piston cylinders by respective connecting rods. The connecting rods connect to a wrist pin associated with each of the pistons, and the wrist pins are respectively supported by a dry lubricant bushing to the associated piston. The compressor housing may have a first housing portion and a second housing portion forming respective halves of the compressor housing. | 03-19-2015 |
20160108908 | COMPRESSOR AND CRANKSHAFT-CONNECTING ROD ASSEMBLY - A compressor may include a shell, a crankshaft, a piston and a connecting rod. The shell may define a cylinder. The crankshaft is supported for rotation relative to the shell. The piston reciprocates within the cylinder in response to rotation of the crankshaft. The piston and the cylinder define a compression chamber therebetween. The connecting rod includes a first bushing rotatably coupled to the piston and a second bushing rotatably coupled to the crankshaft. The second bushing may include a driving surface contacting the crankshaft and having a recess formed therein. The recess receives an insert. | 04-21-2016 |
20180023554 | COMPRESSOR FOR DISCHARGING A MEDIUM | 01-25-2018 |