| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 092120100 | DISPLACEMENT CONTROL OF PLURAL CYLINDERS ARRANGED IN PARALLEL, RADIAL, OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS | 40 |
| 20120180650 | AXIAL PISTON MACHINES - The invention relates to an axial piston machine of a kind that has a plurality of pistons each reciprocating in a respective cylinder in a direction substantially parallel or at an angle less than 30 degrees to a crankshaft axis. The crankshaft axis presents a crank that is at an angle to the crankshaft axis and to which a reciprocator is mounted. The reciprocator effects the controlled movement of the pistons in their cylinders via a connection mechanism that connects each said piston with said reciprocator. The machine includes at least one pair of rotational constraint mechanisms to constrain the movement between the reciprocator and the pistons. | 07-19-2012 |
| 20080223206 | Pressure Booster - In a pressure booster having a cylinder mechanism, a floating mechanism is disposed between pistons and a piston rod, the floating mechanism being capable of absorbing offset (off centered) loads that are imposed on the pistons from the piston rod. The floating mechanism is constituted from swing bolts connected to both ends of the piston rod, support plates mounted onto end surfaces of the pistons and which swingably support the swing bolts therein, and fixing plates disposed between the ends of the piston rod and the support plates. | 09-18-2008 |
| 20110061524 | HYDRAULIC MODULE - A hydraulic module with two inclined-axis drive systems. The hydraulic module comprises a yoke ( | 03-17-2011 |
| 20120060684 | FLUID WORKING MACHINE AND METHOD OF OPERATING A FLUID WORKING MACHINE - The present invention relates to a fluid working machine comprising a controller and a working chamber, an electronically controllable low pressure valve associated therewith and a fast high pressure valve associated therewith, characterised in that the working chamber has associated therewith a slow high pressure valve for controlling the connection of the working chamber to a secondary high pressure manifold. A fluid working machine according to the invention may be operated to rotate its shaft to a certain position, for example to allow easy maintenance of a wind turbine generator. | 03-15-2012 |
| 092120200 | Parallel cylinders | 32 |
| 20090120279 | Bearing restricting device in swash plate hydraulic pump or motor - In a swash plate hydraulic pump or motor structured so that a convex arc surface on the back surface of a swash plate is supported on a concave arc surface of a swash plate support via a bearing in a manner enabling the arc surface to swing in the circumferential direction that follows the arc path. A restricting pin is included for restricting movements of the bearing. The assembly structure prevents the restricting pin from coming out of the swash plate and the swash plate support. One end of the restricting pin is supported rotatably on a side surface of the swash plate. An intermediate portion of the restricting pin is engaged in an engagement hole formed in a holder of the bearing in a loosely fitting manner. Finally, the other end of the restricting pin is inserted into a support rod supported rotatably around its axis on the swash plate support to permit movement of the restricting pin in a pin axial direction. | 05-14-2009 |
| 20090013863 | Bent Axis Pump - A bent axis pump wherein the coupling between a cylinder body and a connecting pin of a back body takes place by the interposition of a bush suitable for guiding the rotation of the cylinder body limiting the friction between the cylinder body and the pin. The pin life is considerably extended. | 01-15-2009 |
| 20110197752 | AXIAL PISTON MULTI CIRCUIT MACHINE - An axial multi circuit machine has a housing and centrally mounted drive shaft A cylinder barrel has a plurality cylinders with a piston placed in each cylinder In one embodiment the drive shaft rotates the cylinder barrel with respect to a stationary wedge and in another embodiment the drive shaft rotates the wedge with respect to the stationary cylinder barrel A cylinder head with a cylinder having at least one port for receiving and discharging a fluid to a first fluid circuit and a second cylinder having a second port for discharging fluid to a second fluid circuit The first and second fluid circuits are independent and can be at different pressures and flow rates Alternatively, the machine may function as a motor and receive fluid by means of one or more of the fluid circuits which in turn imparts a driving force to the drive shaft | 08-18-2011 |
| 20120192710 | Oil-Free Air Compressor for Rail Vehicles - 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, and a multi-piece crankshaft assembly supported by the compressor housing. 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 at least a first housing portion and a second housing portion. The first housing portion and the second housing portion may form respective halves of the compressor housing that are secured together with mechanical fasteners. | 08-02-2012 |
| 20090139396 | Wobble Plate Compressor - [Object of the Invention] An object of the present invention is to provide a wobble plate compressor equipped with a mechanism for preventing the rotation of the wobble plate which is simply structured, producible at low cost, and does not cause heavy noise or vibration. | 06-04-2009 |
| 20100236400 | AXIAL PISTON MACHINE WITH ROTATION RESTRAINT MECHANISM - A recipricator restraint assembly for a Z-crank axial piston machine is described. The assembly includes two gimbal arms each linked together at gimbal link joint that intersect at a point T. Point T lying in a medial plane M being defined as the plane passing through the point of coincidence of the crank and crankshaft axes to which the line that bisects the crank angle is normal. Each of the gimbal arms is pivotally mounted at an identical distance L from point T. A cylinder gimbal is pivotally mounted from the cylinder cluster and a recipricator gimbal is pivotally mounted from the recipricator. The recipricator gimbal pivot axis is equidistant from point X and T as is the cylinder gimbal pivot axis. The orientations of the pivot axes of the two gimbal arms being mutual reflections in the medial plane M resulting in the point T lying on the medial plane M as the crankshaft rotates with respect to the cylinder cluster, and thus ensuring homo-kinetic rotational restraint between the recipricator and the cylinder cluster. | 09-23-2010 |
| 20110030549 | RETRACTION BALL FOR A HYDROSTATIC PISTON MACHINE - A retraction ball and a system made of a retraction ball and an elastic element for a hydrostatic piston machine is provided, having at least one recess for accommodating an elastic element, and at least one structural element being disposed in the recess for locking the elastic element. | 02-10-2011 |
| 20090064855 | Capacity-variable type swash plate compressor - A capacity-variable type swash plate compressor in which a link mechanism is hardly worn and superior durability is demonstrated. According to the compressor in the invention, a link mechanism comprises a swash plate arm and first and second intermediate arms. The first and second intermediate arms include pairs of first guided surfaces extending in parallel to a virtual plane P and having back sides thereof facing each other in front and back in the direction of rotation of a drive shaft, and each are formed into a plate shape extending from the side of a lug plate to the side of a swash plate. First and second lug arms of the lug plate are formed with first and second lug-side storage recesses having first guiding surfaces. The first and second intermediate arms are stored in the first and second lug-side storage recesses. | 03-12-2009 |
| 20110252958 | Machine Housing of a Hydraulic Machine - A machine housing of a piston machine is disclosed. The machine housing is formed in two parts. The machine housing has a main housing which is closed off by a connection plate. Here, the connection plate is screwed to the main housing by means of a plurality of screws, and is positioned with low tolerances with respect to said main housing by means of two centering pins. Here, the centering pins are arranged with twofold rotational symmetry with respect to a shaft axis of a drive shaft of the piston machine. In contrast, screw positions do not have rotational symmetry with respect to said shaft axis. This prevents incorrect mounting of the connection plate. | 10-20-2011 |
| 20110017060 | HYDRAULIC PUMP - A pump has an axial drive shaft with a cam fence that extends radially outwardly from an axis of the drive shaft. The cam fence axially displaces, in respective cylinders, each of a plurality of elongate pistons arranged in parallel to and around the axis and angularly spaced apart from each other. The axial position of an outer margin of the cam fence varies as a function of its radial angle with the axis. In one part of the operation of the pump, a piston is withdrawn to uncover a radial inlet port to draw fluid into the cylinder from an internal reservoir volume formed in the drive shaft. In a second part of the operation, the drive shaft is further rotated to open a cylinder end port by means of a rotary valve and closing the side port of the cylinder with a portion of the drive shaft body. In a third part of the operation, the piston is advanced to push fluid out of the cylinder end port into an output chamber. The pump is double-ended such that opposed ends of any piston are drawing in fluid, and pushing out fluid, at the same time. | 01-27-2011 |
| 20080236384 | Axial Piston Machine - The invention relates to an axial position machine ( | 10-02-2008 |
| 20110088547 | Wobble Plate-Type Variable Displacement Compressor - Disclosed is a wobble plate type variable displacement compressor that uses a constant velocity universal joint mechanism, which comprises an inner ring and an outer ring, balls that are held between guide grooves of the inner ring and the outer ring to transmit power, wherein a wobble plate is connected and fixed to the outer ring. In the compressor, the wobble plate is provided with a cylindrical part which extends in the axial direction of a swash plate, and in the relative rotation structure between the swash plate, and the wobble plate and the outer ring, the swash plate is supported to be able to relatively rotate only in relation to the wobble plate via a bearing interposed at least between the cylindrical part and the inner diameter portion of the swash plate, without being supported to be able to rotate relative to the outer ring. With this wobble plate type variable displacement compressor using the specified constant velocity universal joint mechanism, the relative rotation structure between the wobble plate and the outer ring, and the swash plate, can be improved, workability and productivity can be improved, and the cost and weight can be reduced. | 04-21-2011 |
| 20100000401 | AXIAL-PISTON MACHINE HAVING AN ANTIWEAR LAYER - An axial piston machine having a control plate and a cylinder drum rotating relative to the control plate. The control plate rubs or slides on a second sliding side of the cylinder drum via a first sliding side. One of the sliding sides has a carbon-containing layer. | 01-07-2010 |
| 20120000354 | Hydrostatic Axial Piston Machine - A hydrostatic axial piston machine ( | 01-05-2012 |
| 20120247319 | SWASH PLATE TYPE VARIABLE DISPLACEMENT COMPRESSOR - A housing has a peripheral wall that surrounds a crank chamber. The peripheral wall has a valve chamber that is recessed radially inward from an outer surface of the peripheral wall with respect to the axis. A bimetal member, which deforms in correspondence with the temperature in the crank chamber, is arranged in the valve chamber. A valve body, which is supported by the bimetal member, is arranged in the valve chamber. The peripheral wall has a first oil discharge passage and allows communication between the crank chamber and the valve chamber, and a second oil discharge passage through which the valve chamber and a suction chamber communicate with each other. When the temperature in the crank chamber exceeds a predetermined value and deforms the bimetal member to move the valve body, communication between the first and second oil discharge passage is permitted through the valve chamber. | 10-04-2012 |
| 20120210865 | RECIPROCATING PUMP FLOW CONTROL - A multi-throw reciprocating pump is provided. The pump provides active stroke control. Fluid flow is controlled by canceling out at least a portion of a discharge stroke of one plunger with a suction stroke of another plunger. Controlling the degree to which the discharge stroke is cancelled out is used to control the actual volume of fluid being pumped. | 08-23-2012 |
| 092013000 | WITH ADJUSTABLE MEANS TO VARY STROKE OF WORKING MEMBER | 16 |
| 20100089230 | Axial Piston Machine With an Elongated Guide Element for a Cage Segment - The invention relates to an axial piston machine ( | 04-15-2010 |
| 20090095149 | Axial Piston Machine - An axial piston machine utilizing a swashplate design has a cylinder drum ( | 04-16-2009 |
| 20090095148 | Hydrostatic Axial Piston Machine - A hydrostatic axial piston machine, in particular a swashplate machine, has a cylinder drum ( | 04-16-2009 |
| 20110271829 | Rotary Hydraulic Machine and Controls - A variable capacity hydraulic machine has a rotating group located within a casing and a control housing secured to the casing to extend across and seal an opening in the casing. The control housing accommodates a control circuit and a pair of sensors to sense change in parameters associated with the rotating group. One of the sensors is positioned adjacent the barrel on the rotating group to sense rotational speed and the other senses displacement of the swashplate. The control housing accommodates a control valve and accumulator to supply fluid to the control valve. | 11-10-2011 |
| 20110271828 | Axial Piston Machine having Bent Axis Construction - An axial piston machine having bent axis construction, having a drive shaft rotatably supported in a housing and ending in a drive flange comprising a face on the drive shaft side, is disclosed in which ball races are formed for receiving piston heads. The piston heads are rotatably retained in the ball races by means of deformable rings. The axial piston machine having bent axis construction possesses characteristics so that pressure relief of the ball head is ensured for all cases. The rings at the inner surface comprise at least one groove running so as to connect the ring faces to each other. | 11-10-2011 |
| 20090199705 | AXIAL PISTON MACHINE AND CONTROL PLATE FOR AN AXIAL PISTON MACHINE - In the case of a control plate for an axial piston machine having at least two control openings ( | 08-13-2009 |
| 20090095150 | Axial Piston Machine Utilizing A Swashplate Design - A hydrostatic axial piston machine utilizing a swashplate design has a cylinder drum ( | 04-16-2009 |
| 20090241766 | VARIABLE DISPLACEMENT COMPRESSOR - A variable displacement compressor includes a housing, a rotary shaft, a bearing, a seal member, a shaft seal chamber, a discharge refrigerant passage and a partition. The partition is provided in the shaft seal chamber for partitioning the shaft seal chamber into a first seal chamber to which the discharge refrigerant passage is opened and a second seal chamber part of the periphery of which is formed by the bearing and the seal member. The partition is provided with a first guide passage through which refrigerant containing lubricating oil flowed from the discharge refrigerant passage into tho first seal chamber is substantially all supplied to the seal member of the second seal chamber. | 10-01-2009 |
| 20090078113 | Reciprocating Piston Machine, in Particular a Compressor for a Vehicle Air-Conditioning Unit - A reciprocating piston machine ( | 03-26-2009 |
| 20110232476 | ROTARY MACHINE WITH PISTONS AND A BARREL - The invention relates to a rotary machine with pistons ( | 09-29-2011 |
| 20090107327 | Capacity-variable type swash plate compressor - A capacity-variable type swash plate compressor in which the preferable operability of a link mechanism and reduction of manufacturing cost are realized is provided. According to the compressor in the present invention, a link mechanism includes one swash plate arm and intermediate arms. The intermediate arms include first and second intermediate arms. The first and second intermediate arms are joined while being rotatably supported by a lug member and the swash plate arm via a lug-side pin which constitutes a lug-side axis and a swash-plate-side pin which constitutes a swash-plate-side axis and clamping the lug member and the swash plate arm via the lug-side pin and the swash-plate-side pin so as to allow a sliding movement. | 04-30-2009 |
| 20090049981 | MECHANISM FOR VARYING CYLINDER STOP POSITION AND SUBSTRATE PROCESSING APPARATUS INCLUDING SAME - A cylinder stop position varying mechanism is employed in a cylinder having a piston and a shaft. The cylinder stop position varying mechanism includes a stopper fitted onto the shaft; a pair of limiters for stopping a reciprocating movement of the piston by contact with the stopper; and a limiter moving mechanism for varying positions of the limiters. The cylinder is driven by a hydraulic pressure, and the limiter moving mechanism is provided to each of the pair of limiters to control positions of the limiters independently. | 02-26-2009 |
| 20120097022 | PUMP UNIT - A pump unit includes a variable capacity pump, and a balanced piston mechanism having a piston body, connected to an operation section of a variable swash plate, provided inside a cylinder, capable of sliding in an axial direction. The balanced piston mechanism has first, second and third pressure receiving chambers provided in the cylinder. Primary side and the secondary side working fluid pressures of an actuator switching valve are respectively introduced to the first receive pressure chamber and the second pressure receiving chamber, and a set pressure that has been previously set, corresponding to a working fluid differential pressure arising before and after passing through the actuator switching valve, in a steady state of the operating position of the actuator switching valve is introduced to the third pressure receiving chamber. | 04-26-2012 |
| 20110315006 | HYDROSTATIC MACHINE - A hydrostatic machine, has first and second axial-piston units arranged on a common axis and having pistons which cooperate with an adjustable swash plates, wherein the first axial-piston unit has a first one of the swash plates associated with it while the second axial-piston unit has a second one of the swash plates associated with it, and a coupling mechanism which couples the first and the second swash plates mechanically and adjustably. | 12-29-2011 |
| 20100206161 | AXIAL PISTON MACHINE IN A SWASH-PLATE CONSTRUCTION HAVING AN ADJUSTING DEVICE - An axial piston machine in a swash-plate construction with an actuating device. The actuating device comprises a actuating piston and a mating piston. The actuating piston and the mating piston are connected to the swash plate each with the first end thereof and can be applied with the second end thereof with a force acting in the direction of the first end. For resetting the swash plate in the direction of a resting position, an elastic element is provided on the actuating piston and on the mating piston, which is supported on a spring bearing arranged on the first side facing the swash plate of the actuating piston or of the mating piston. In the other direction, the elastic element is supported on a second spring bearing arranged on the end facing away from the swash plate of the actuating piston or of the mating piston. When the swash plate is deflected from the resting position, the second spring bearing of the actuating piston or of the mating piston is supported on a counter bearing on the housing side. The second spring bearing of the respective other actuating bearing or mating bearing is supported on a counter bearing on the piston side. | 08-19-2010 |
| 20100132544 | AXIAL PISTON MACHINE HAVING A RETURN DEVICE - The invention relates to an axial piston machine comprising a pivoting cradle having variable tilt. The axial piston machine has at least one adjustment device extending substantially in the longitudinal direction of the axial piston machine. The axial piston machine further comprises a return element for returning to a position of the pivoting cradle. The return element and the adjustment device are disposed in a plane extending parallel to an axis of rotation of the axial piston machine and perpendicular to a pivoting axis of the pivoting cradle. | 06-03-2010 |
| 092130400 | Predetermined discrete incremental adjustment positions | 1 |
| 20090277324 | ACTUATING ASSEMBLY FOR AN ADJUSTABLE WIDTH GUIDEWAY IN A CONVEYOR SYSTEM FOR BOTTLES - An adjustable width guideway assembly for use in a conveyor for conveying articles having different widths. The assembly comprises a first moveable guide and a second fixed guide parallel to the first guide, the first and second guides defining the guideway therebetween. The first guide is moveable towards or away from the second guide between a first position, a second position and at least one intermediate position The disclosure is particularly directed towards an adjustable width guideway assembly for use in an air conveyor conveying light plastic bottles suspended in the guideway by a flange located on the bottle neck. | 11-12-2009 |
| 092130700 | BY adjusting or limiting motion of relatively movable power transmission element | 3 |
| 20090272258 | Wechselarmatur - A retractable assembly, comprising: an assembly housing; a linear drive in the assembly housing; and a tubular holder), movably guided between a measuring position and a service position by means of the linear drive, for fluid-sealed reception of a sensor, with which a physical and/or chemical process variable is determinable. The linear drive includes a piston seated movably in a cylinder and loadable with a pressure-bearing medium on one or both ends and the tubular holder is fixed in the piston. The piston has on its working end active for the measuring position a breach in the direction of the interior of the tubular holder. | 11-05-2009 |
| 20110023701 | VARIABLE DISPLACEMENT RECIPROCATING PUMP - A variable displacement reciprocating pump with pumping rate that is adjustable from zero to maximum stroke while the pump is running. Stroke is varied by changing relative position of pairs of eccentric inner and outer cams that drive the pump's plungers. The pump's input drive shaft drives two gear trains: a first gear train that turns the inner cams and a second gear train that turns the outer cams. These cams normally revolve together with no relative motion occurring between them. A rotary actuator is positioned in the first gear train to rotate the inner cams relative to the outer cams and thereby changes the pump's stroke. A computerized system of sensors and control valves allows the pump to be automatically controlled or limited to any one or combination of desired output flow, pressure and horsepower. | 02-03-2011 |
| 20080250921 | Stroke adjustment mechanism for reciprocating pumps - A stroke adjustment mechanism having fewer parts that are easier to manufacture. In order to translate stroke adjustment into an eccentric offset of a rotating shaft to act as a rotating cam surface, the present invention utilizes two separate and identical plungers. The plungers are easier to manufacture as they do not require complex machining in mating parts. The present invention is also easier to assemble than prior designs. The present invention allows the drive gear to be produced with a simple round ID bore and also uses a one-piece, easy to machine round shaft. This provides for a simple and strong design. | 10-16-2008 |
