Shaft axis parallel to axes of working members (70)

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71
This subclass is indented under subclass 68.  Apparatus in which the axes of the working members are parallel to each other, and the axis of the shaft is parallel to the axes of the working members.

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70,for relatively movable working members forming oppositely movable walls of a common chamber and being interconnected by a common rotatable shaft having the axis thereof extending parallel to the axes of the working members. Note the class definition, Statement Relating To Placement Of Patents Involving Combination And Subcombination Subclasses, and the paragraph following the title in the schedule of this class.

 
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Patent Number
Title
  Date
3967535 Uniflow steam engine Jul-6-1976
A uniflow steam engine of the multi-cylinder type wherein the cylinders are rotatably mounted within a jacket having a sinusoidal cam track therein. Extending through slots, the ends of which are the exhaust ports in the cylinders and into the cam track are cam followers which are mounted on the pistons...     
3973471 Motors Aug-10-1976
Hydraulic and pneumatic motors having expansion chambers arranged between two supporting means, at least one of which is rotatable, said chambers formed at least in part of material that is elastically deformable by the pressure medium used, are provided. The invention also provides a control system...     
4030404 Swash-plate drive mechanism Jun-21-1977
A device comprising at least three reciprocable piston-shaped bodies, each of which is provided with a drive rod which cooperates, via a drive rod head accommodating sliding bodies, with a plate which is mounted on a rotatable shaft and which can be tilted about a tilting axis which is transverse to...     
4037521 Noise reduction Jul-26-1977
An axial piston machine comprising a casing which encloses and mounts the machine working parts therein and a cover of pliant material mounted externally of the casing to substantially entrap a quantity of air or other gas against at least a part of the outer surface of the casing to reduce noise radiation...     
4037522 Vehicle air conditioning compressor Jul-26-1977
A vehicle air conditioning compressor which is driven by e.g., the prime mover of the vehicle as required to cool the passenger compartment comprises a swash plate mounted on a rotatable shaft and a plurality of pistons, each being reciprocated by the rotating swash plate via a set of a ball and a shoe...     
4090430 Swash plate type compressor May-23-1978
A swash plate type compressor to provide reciprocation of cylindrical guide members arranged around a driving shaft axis and a corresponding number of pistons respectively connected to the cylindrical guide members with lubricating means arranged in compartments to prevent leakage of lubricant to the...     
4090478 Multiple cylinder sinusoidal engine May-23-1978
A multiple cylinder sinusoidal engine comprising a plurality of piston/cylinder arrangements lying parallel to, and around, a shaft cylinder is disclosed. Mounted in the shaft cylinder is a sine shaft, i.e., a cylindrical shaft having formed in its periphery at least one closed, double wave, continuous,...     
4114517 Double acting actuator Sep-19-1978
The actuator comprises a cylinder of non-circular cross section having three ports and a center axis, three pistons and a piston rod which is provided with at least one male thread having a pre-determined helical angle at a pre-determined pitch. One of the pistons is mounted on the piston rod for rotation...     
4117770 Axial-piston hydraulic machine Oct-3-1978
An axial-piston hydraulic machine with a rotating cylinder block. The axial bores of said cylinder block accommodate reciprocating pistons. Said pistons restrict the working chambers some of which communicate through a passage with a high-pressure zone while the others communicate through a passage with...     
4145887 Swashplate compensation mechanism Mar-27-1979
A spring compensation mechanism for a swashplate drive having a variable swashplate angle, particularly suited for use with ahot gas engine. A compensating rod has one end connected for movement in one direction in response to tilting of the swashplate while the other end is connected to move in a perpendicular...     
4244679 Swash-plate-type compressor for air-conditioning vehicles Jan-13-1981
Shoes for operatively connecting a swash-plate with the compression pistons of a swash-plate type compressor are made from a novel Cu-based alloy. Improved shoes are characterized by a combination of high heat conductivity and excellent wear resistance properties particularly when subjected to a lubricating...     
4301716 Refrigerant compressor units Nov-24-1981
In a refrigerant compressor unit of a type in which the reciprocating movement of pistons is caused by the nutation of a non-rotatably but nutatably supported wobble plate driven by a cam rotor. The wobble plate includes a ring member and a bevel gear member. The bevel gear member is provided with a...     
4364306 Swash plate type compressor Dec-21-1982
A swash plate type compressor, in which there is incorporated a plurality of double-headed compressor pistons, each being formed with an axially central recess between two heads thereof. Inside the recess a generally outer part of the swash plate is arranged so as to establish an operative connection...     
4394110 Swash-plate type compressor Jul-19-1983
A swash-plate type compressor is provided which includes a horizontally disposed cylinder block. The cylinder block has three cylinder bores axially extending through the cylinder block in a circumferentially spaced arrangement, two of the cylinder bores being located at upper portions of the cylinder...     
4416190 Seal for compressor Nov-22-1983
A seal is provided which seals the junction between the cylinder block of a compressor and a cylinder head secured to an end of the cylinder block, which comprises a gasket interposed between the cylinder block and the cylinder head. The gasket is formed integrally with an axial swell located in the...     
4425837 Variable displacement axial piston machine Jan-17-1984
A variable displacement axial piston machine is disclosed having a piston guide cylinder stationarily aligned with an axial working piston cylinder. A single-headed piston has a piston head at one end reciprocally mounted in the working cylinder and a piston guide at the opposite end reciprocally mounted...     
4431378 Swash plate type compressor Feb-14-1984
A swash plate type compressor for use in air conditioning systems operating with a refrigerant gas in which lubricating oil is previously mixed, comprises a plurality of cylinder bores and pistons, a swash plate chamber wherein a swash plate for reciprocating the pistons within the cylinder bores, is...     
4470761 Swash plate type compressor Sep-11-1984
A swash plate type compressor, having a swash plate fixedly and slantingly secured to a drive shaft and also secured to pistons in such a manner that the pistons reciprocate as the swash plate rotates, has piston webs which have a sliding outer surface and a relief inner surface. A clearance exists between...     
4495855 Reciprocating type oil-free gas compressor Jan-29-1985
In an oil-free multistage gas compressor comprising cylinders, a plurality of compression pistons in respective cylinders and a transmission mechanism for reciprocating said compression pistons through guide pistons serially connected to said compression pistons, the improvement wherein a common space...     
4516475 Hydrostatic piston machine May-14-1985
A hydrostatic piston machine has a housing, a rotor, a plurality of pistons rotatable with the rotor, and a displacing element operative for effecting reciprocation of the pistons and having a surface which is in sliding contact with the latter. Means is provided for reducing friction between the surface...     
4557227 Exhaust port bridge relief hole Dec-10-1985
An internal combustion engine cylinder liner adapted to have a piston move reciprocally therewithin, the cylinder liner including an exhaust port, an exhaust port bridge extending across the exhaust port, and a relief hole in the cylinder liner positioned at one end of the exhaust port bridge for allowing...     
4568252 Swash-plate type compressor Feb-4-1986
A swash-plate type compressor having a housing, a drive shaft rotatably supported by the housing, a swash-plate slantly secured on the drive shaft, and a plurality of pistons fitted in a cylinder bore formed in correspondence to each of the pistons parallelly to the drive shaft and provided with a pair...     
4640144 Motion interconversion apparatus Feb-3-1987
Apparatus for interconverting reciprocating and rotative motion is comprised of a disc shaped rotative slant having a first continuous groove formed on its top surface and a second continuous groove formed in its bottom surface. The first and second continuous grooves have an elliptical configuration...     
4662267 Swash plate type compressor shoe May-5-1987
There are disclosed a shoe which is interposed between a swash plate and a piston of a swash plate type compressor and which converts rotary movement of the swash plate into reciprocal movement of the piston, and a method for manufacturing the same. The shoe has a hemispherical part which is in slidable...     
4683804 Swash plate type compressor shoe Aug-4-1987
A swash plate type compressor is provided with a compressor shoe having a sliding contact surface for making sliding contact with a swash plate. The sliding contact surface is formed with a central hole. A crest portion is formed between the hole and the outer periphery of the shoe, and smooth surface...     
4744288 Axial piston pumps and motors May-17-1988
An axial piston pump is disclosed which includes a housing, a cylindrical bore in the housing, a piston barrel rotatable in the bore and spaced from the bore walls and an antifriction bearing structure surrounding the barrel between the barrel and the bore. A plurality of axial piston are provided in...     
4765194 Piston-operated machine Aug-23-1988
A piston-operated machine is disclosed having a crank shaft and an intermediate crank section, the axis of the crank section being oblique to the axis of the crank shaft. The crank section passes rotatably and centrally through a wobble plate, and the center of the wobble plate lying on a prolongation...     
4767283 Swash plate type compressor Aug-30-1988
A swash plate type compressor having a plurality of double-headed pistons reciprocating in axially extending cylinder bores of a cylinder block unit for compressing refrigerant gas, in which refrigerant gas returning from a refrigerating circuit is initially introduced into a swash plate chamber enclosed...     
4771676 Hydraulic transmission device Sep-20-1988
A hydraulic transmission device operable to translate hydraulic energy into mechanical energy and vice versa. The device has a housing 14 having a close end portion and an open end portion in the longitudinal direction. The housing supports therein a drive shaft 11, a retainer 12, and a cylinder block...     
4771677 Axial piston machine Sep-20-1988
The invention relates to an axial piston machine having an oblique disk body (14) arranged in a housing (1) in a torsionally secure manner, having a drive shaft (4), which is mounted in the oblique disk body (14), and having a rotatable cylinder drum (7), which is coupled with the drive shaft (4) and...     
4776257 Axial pump engine Oct-11-1988
The invention relates to an adjustable axial piston engine having spaced apart end walls with a shaft extending between the end walls. A rotary carrier is attached to the shaft adjacent one of the end walls and an oblique adjusting plate is mounted adjacent the other end wall. A piston-cylinder unit...     
4789311 Swash plate type compressor Dec-6-1988
A swash plate type refrigerant compressor having a swash plate supported on a rotatable drive shaft, a plurality of double-headed pistons engaged with the swash plate so as to be reciprocated in cylinder bores of the compressor is disclosed herein. The swash plate has formed round and throughout its...     
4860641 Variable stroke compressor socket plate Aug-29-1989
A wobble plate of the type for operating in a variable displacement compressor including a plurality of pistons operatively connected to the wobble plate by a plurality of dumb-bell like piston rods having spherical end portions and a connecting rod extending therebetween. The wobble plate includes a...     
4893548 Hydraulically operated swash-type apparatus Jan-16-1990
A hydraulically operated, swash-plate apparatus such as a hydraulically operated continuously variable transmission includes a cylinder block rotatably supported in a case and having a plurality of axial cylinders arranged in an annular pattern, plungers received respectively in the cylinders, and a...     
4896585 Adjustable axial piston machine Jan-30-1990
An adjustable axial piston machine is disclosed which has a housing, a cylinder drum and an operating cylinder-servo piston unit capable of being acted upon by control pressure. The cylinder-servo piston unit has a movable part which is being connected with a control of the axial piston machine. The...     
4898077 Self-bleeding hydraulic pumping apparatus Feb-6-1990
A swash plate type hydraulic pumping assembly (10) including a plurality of pistons (28) axially reciprocated in individual chambers (22) of a rotor (20). Each piston (28) includes a hollowed central cavity (30) supporting a compression spring (54) which urges the piston (28) out of the chamber (22)...     
4911063 Hydraulically operated swash-plate apparatus Mar-27-1990
A hydraulically operated swash-plate apparatus includes a cylinder block rotatably supported in a case and having a plurality of axial cylinders arranged in an annular pattern, the case having an end plate for bearing a thrust load from the cylinder block, a plurality of plungers received respectively...     
4941395 Bent-axis hydraulic apparatus Jul-17-1990
A bent-axis hydraulic apparatus having a case in which a rotatable cylinder block is positioned and which is associated with a rotatable shaft at a drive angle therebetween. A split angle spline drive interconnects the cylinder block of the hydraulic axial piston unit with a rotatable shaft for transmission...     
4979877 Wobble plate type refrigerant compressor Dec-25-1990
A wobble plate type refrigerant compressor including a compressor housing having a cylinder block is disclosed. A plurality of peripherally located cylinders are formed through the cylinder block. A piston is slidably fitted in each of the cylinders and is reciprocated by a drive mechanism which includes...     
4991492 Hydrostatic axial piston machine Feb-12-1991
A variable displacement hydrostatic axial piston machine has a cylinder barrel which is rotatable in a yoke and has a plurality of circumferentially spaced cylinder bores in which are mounted pistons which with the ends of their associated piston rods are journalled in a drive disk on a machine shaft...     
5011377 Swash-plate type piston pump motor Apr-30-1991
A swash-plate type piston pump motor has a housing assembly comprising: an end plate for rotatably supporting a cylinder rotor against thrust loads in its axial direction and also rotatably supporting the upper end of an output shaft; a cylinder side peripheral wall encompassing the cylinder rotor; an...     
5033358 Axial piston type motor Jul-23-1991
An axial piston type motor for a hydrostatic transmission, wherein the motor is arranged to generate an output torque at the drive flange uses a Rzeppa joint (32) to couple the drive flange (10) with the cylinder barrel (16). The center of the Rzeppa joint (32) is located in the tilting point (60) between...     
5070765 Torque transfer mechanism Dec-10-1991
A mechanism for transmitting torque from one shaft to another shaft includes a formation attached to one shaft, the formation defining a plurality of cylindrical surfaces each having radius R, the axes of the cylindrical surfaces being parallel and disposed at angularly spaced locations about a circle...     
5073091 Power transmission Dec-17-1991
A rotary hydraulic machine which includes a housing having a shaft mounted for rotation within the housing about a shaft axis. A cylidner block is coupled to the shaft for co-rotation with the shaft within the housing and includes a plurality of cylinders disposed in a circumferential array parallel...     
5105728 Balanced variable-displacement compressor Apr-21-1992
A variable-displacement compressor includes a wobble member for driving a pistons, and a rotation member for wobbling the wobbling member, a first support portion for supporting a wobbling member in such a manner that the angle of wobbling of the wobbling member is variable, and a second support portion...     
5140903 Wobble plate type compressor Aug-25-1992
This invention is directed to a wobble plate type refrigerant compressor. The compressor includes a housing having a cylinder block provided with a plurality of peripherally located cylinders, a front end plate and a crank chamber enclosed by the front end plate and the cylinder block. A piston is slidably...     
5167181 Fluid transfer devices Dec-1-1992
A positive displacement fluid transfer device is disclosed which may be operated either as a fluid pump, compressor or motor with no modification. The device is based mechanically upon axial cylinder and plunger hydraulic devices using a swash plate to reciprocate the plunger or plungers, but further...     
5181834 Swash plate type compressor Jan-26-1993
A swash plate type compressor is provided with a front and rear cylinder blocks having a crank case connected to a suction port. The cylinder blocks include a plurality of cylinders, and are connected to a front and rear housing sections for covering the cylinders. Each housing section contains a discharge...     
5228379 Swash plate type compressor Jul-20-1993
A swash plate type compressor is disclosed which is intended to prevent a hemispherical shoe, provided between the piston and the swash plate, from being spun on slat surface of the swash plate during operation of the compressor. In the preferred embodiment of the invention, the swash plate is formed...     
5239913 Slant plate type compressor Aug-31-1993
A slant plate type compressor is disclosed. The drive mechanism of the compressor is provided with a mechanism which substantially eliminates a gap between the wobble plate and the balance weight ring on the slant plate, thereby preventing an offensive noise caused by the collision between the wobble...     
5249507 Swash-plate plunger type hydraulic apparatus Oct-5-1993
A plunger and swash-plate type hydraulic pump or motor with a retainer plate 30 that presses a slidable abutment 22 of each of a plurality of shoe members 20 against a slidably abutting surface 8a of a swash-plate 8 in such a manner that a neck 21 of each shoe member is inserted into each of a plurality...     
5269193 Swash plate mechanism Dec-14-1993
A swash plate mechanism, for coverting linear motion into notary motion and vice versa is disclosed, which overcomes the main difficulties with older arrangements of swash plate drives. These are the high friction of most drives or the high complexity of efforts to overcome the friction effects. The...     
5275087 Wobble plate type refrigerant compressor Jan-4-1994
A wobble plate type refrigerant compressor is disclosed which includes a compressor housing having a crank chamber and a cylinder block which is provided with an axial central bore and a plurality of cylinders. A plurality of pistons are slidably fitted within each of the cylinders. A wedge-shaped cam...     
5293810 Variable displacement compressor Mar-15-1994
A variable displacement compressor comprises a housing containing a cylinder block, a plurality of pistons disposed in the cylinder block, a crank chamber, a rotatable drive shaft, a drive plate mounted on the drive shaft such that it may rotate integrally with the drive shaft, a rotary journal which...     
5299918 Bearing for compressor drive shaft Apr-5-1994
A slant plate compressor with a variable displacement mechanism including a driving mechanism having a drive shaft is disclosed. The compressor includes a compressor housing having a cylinder block. A plurality of peripherally located cylinders are formed through the cylinder block. A piston is slidably...     
5333453 High-efficiency reduced-noise swash-plate-type hydraulic device Aug-2-1994
A swash-plate plunger-type hydraulic device has a cylinder block with a plurality of plungers slidably fitted in cylinder bores, a swash plate confronting one end of the cylinder block, and a distribution valve plate slidably held against the other end of the cylinder block. The cylinder block has an...     
5335496 Axle driving apparatus Aug-9-1994
An axle driving apparatus which is so constructed that an input pulley for engine power is set lower in mounting position with respect to the axis of a driving axle so s to enable the platform of a vehicle to be lowered. The engine position lowers to promote miniaturization, a lower center of gravity...     
5381724 Swash-plate, plunger-type hydraul pressure apparatus Jan-17-1995
A swash-plate, plunger-type hydraulic pressure apparatus, which may operate as a hydraulic pump or motor, includes a cylinder block, an annular array of plungers slidably held in the cylinder block, a swash plate, a plurality of shoes angularly movably coupled respectively to the ends of the plungers,...     
5421243 Compact refrigerant compressor Jun-6-1995
An automotive air conditioning compressor of more compact and efficient design is achieved with a unique cylinder bore and piston shape. While the cylinder bores and pistons are arrayed in a circle about the central axis of the round cylinder block, the bores and pistons themselves are not round in cross...     
5423182 Improved hydrostatic transmission Jun-13-1995
An improved hydrostatic transmission for use in a transaxle comprising a means for mechanically diverting hydraulic fluid from the hydraulic transmission to a sump to enable the vehicle to be moved with minimal resistance from the hydraulic fluid by unseating at least one of the hydraulic displacement...     
5423183 Hydraulic machine with wedge-shaped swashplate Jun-13-1995
A continuously variable transmission includes a pump (258) driven by an input shaft (256) against a wedge-shaped swashplate (260). Hydraulic fluid pressurized in the pump flows through ports (402) in a pump cylinder block (422) into kidney-shaped slots (406) in the swashplate (260), and from there flows...     
5447028 Axle driving apparatus Sep-5-1995
An axle driving apparatus which is so constructed that an input pulley for engine power is set lower in mounting position with respect to the axis of a driving axle so as to enable the platform of a vehicle to be lowered. The engine position lowers to promote miniaturization, a lower center of gravity...     
5452647 Wave plate type compressor Sep-26-1995
Disclosed is a compressor having a plate rotatable about an axis of a rotary shaft and a piston connected to the plate, wherein the plate causes the piston to reciprocate between a top dead center and a bottom dead center of its stroke in accordance with the rotation movement of the plate. A cam surface...     
5456158 Reciprocating compressor Oct-10-1995
A refrigerant compressor of the type in which a cylinder block and front and rear housings made of an aluminum alloy are fastened together by means of a plurality of bolts made of a ferrous metal and extending through part of the refrigerant gas passage in the compressor and respective bores formed in...     
5477773 Wave plate type compressor Dec-26-1995
Disclosed is a compressor having a plate rotatable about an axis of a rotary shaft and a piston connected to the plate. The plate causes the piston to reciprocate between a top dead center and a bottom dead center of its stroke in accordance with the rotation movement of the plate. Cam surfaces are provided...     
5490767 Variable displacement piston type compressor Feb-13-1996
A piston type compressor includes a compressor housing enclosing a crank chamber, a suction chamber, and a discharge chamber therein. The compressor housing comprises a cylinder block having a plurality of cylinders. A drive shaft is rotatably supported in the cylinder block. A plate is tiltably connected...     
5493862 Continuously variable hydrostatic transmission Feb-27-1996
A continuously variable hydrostatic transmission includes an input shaft connected to drive a hydraulic pump unit, a grounded hydraulic motor unit, and an output shaft. A wedge-shaped swashplate is pivotally mounted to the output shaft in driving connection to receive output torque resulting from the...     
5497623 Hydrostatic pump and motor unit Mar-12-1996
An improved hydrostatic transmission which is compact, reliable and economical to manufacture, including a novel apparatus for reducing the speed of the input to the transaxle using both hydraulics and mechanical gearing; an improved differential which is stronger and less complicated than prior art...     
5513553 Hydraulic machine with gear-mounted swash-plate May-7-1996
The disclosure is directed primarily to pairs of unique nutating gears which are used for restraining the rotation of the wobbler portion of the split swash-plates of both variable- and fixed-displacement hydraulic machines in which the pistons reciprocate in fixed cylinders. Each pair consists of an...     
5517900 Tiltable swash plate type compressor May-21-1996
A variable-capacity swash plate type compressor including a tiltable swash plate and a rotor supported by a drive shaft and connected to the swash plate by a hinge mechanism for controlling the tilting angle of the swash plate to change the capacity of the compressor. The hinge mechanism includes a pair...     
5520088 Axial piston machine May-28-1996
An axial piston machine (1) is described, having a cylinder body (2) that is rotatable relative to a wobble plate (3) and in which several pistons (6) are arranged so as to be axially displaceable, the pistons being supported on a sliding-contact face (4) of the wobble plate 930 by means of slider shoes...     
5542340 Wave cam type compressor Aug-6-1996
A wave cam type compressor includes cylinder blocks. A drive shaft is rotatably supported in the center cylinder blocks. A plurality of cylinder bores are defined about the drive shaft in the cylinder blocks. A wave cam, mounted on the drive shaft, comprises opposing cam surfaces. A width of second portions...     
5556261 Piston type compressor Sep-17-1996
A piston type compressor compresses gas with a plurality of pistons reciprocated in a casing in accordance with the rotation of a drive shaft supported in the casing. The compressor comprises a plurality of casing components disposed along an axis of the drive shaft and mated with one another for forming...     
5596920 Swash plate type compressor Jan-28-1997
A compressor includes a drive shaft rotatably supported on cylinder block. A swash plate rotates in accordance with rotation of the drive shaft. A plurality of pistons reciprocate in the associated bores in the cylinder block in accordance with the rotation of the swash plate. First an second thrust...     
5601416 Wave cam type compressor Feb-11-1997
A wave cam type compressor is described. Cylindroid blocks are provided to support a drive shaft and to contain a plurality of cylinder bores centered around the drive shaft. A wave cam attached to the drive shaft has cam surfaces on the front side and the rear side. The cam surfaces are composed of...     
5622097 Hydraulic piston machine Apr-22-1997
A hydraulic piston machine is proposed, with a cylinder body (1), which comprises at least one cylinder (2) with a piston (3) movable therein, and a control counter-plate (7) which engages the cylinder body (1) by way of a contact surface (6) and, on relative movement between the cylinder body and the...     
5630351 Wobble yoke assembly May-20-1997
A wobble yoke mechanism for converting reciprocating motion to rotary motion (or vice versa) in which each of two yokes (4) are connected to beams (3) by bearings (10, 10', 15, 15') having only one degree of freedom. The two yokes are 90.degree. out of phase. An eccentric bearing (15), also having only...     
5638736 Wave cam type compressor Jun-17-1997
A wave cam 17 is rotatably supported by a drive shaft 13 in cylinder blocks 11, 12. Front and rear cam surfaces 17A, 17B of the wave cam 17 are defined by the surface of a predetermined imaginary cylindroid. Semi-spherical shoes 18, 19 are interposed between each cam surface 17A, 17B and each double-headed...     
5647266 Hold-down mechanism for hydraulic pump Jul-15-1997
The disclosure relates to a pump having (a) a wobble plate, (b) a barrel, (c) a pair of piston assemblies reciprocated in the barrel by the wobble plate, and (c) a mechanism retaining the piston assemblies in contact with the wobble plate. In the improvement, the mechanism comprises a yoke member contacting...     
5655430 Helm pump Aug-12-1997
A hydraulic helm pump used for vessel steering has a housing, a barrel rotating in the housing, and one or more cylindrical pistons reciprocating in the barrel. The barrel has a separate abutment surface at the end of each piston bore and spaced from each respective piston. The pistons are solid, not...     
5671653 Hydraulic axial piston machine Sep-30-1997
A hydraulic axial piston machine is disclosed, having a cylinder drum which is mounted for rotation relative to a housing (1), with a bearing (3) having a slide face (4) being arranged between the circumference of the cylinder drum and the housing (1). It is desired that such a machine shall be capable...     
5694828 Cam plate type compressor Dec-9-1997
Disclosed is a compressor designed to facilitate the assembling of the thrust bearing and reduce noise. A swash plate which moves in responsive to the drive shaft is arranged in a crank chamber defined in a pair of cylinder blocks. Ring washers are held between both bosses of the swash plate and seats...     
5700135 Bellows cam plate pump Dec-23-1997
A cam plate pump comprises a pressurizing chamber formed by a bellows which elongates and contracts along a center axis parallel to the input shaft of the pump. The cam plate rotates together with the input shaft, and compresses the bellows via a piston. A mechanism for guiding the piston along the center...     
5704272 Axial piston energy converting device Jan-6-1998
An improved axial-piston energy converting device is provided by utilizing a thin ceramic wear plate insert, having a typical thickness of only about 0.005 to 0.040 inches in thickness, as a cam surface secured by atmospheric pressure to an underlying support surface of a steel cam plate support structure....     
5704274 Axial piston machine Jan-6-1998
An axial piston machine has a rotary shaft, a first group of concentric radially spaced cylindrical bores, and a second group of concentric radially spaced cylindrical bores axially spaced from and aligned with said first group of cylindrical bores. A wobble plate is located between the groups of cylindrical...     
5735172 Swashplate machine Apr-7-1998
A swashplate machine comprises a casing (1) provided with end members (2, 3) and a rotatable shaft (4). The shaft (4) drives a swashplate (5) through an interconnecting member (6) comprising an off-set sleeve (7) that is keyed to the shaft (4) and a non-rotating ball portion (8). The interconnecting...     
5737996 Hydraulic axial piston machine Apr-14-1998
A hydraulic axial piston machine (1) is disclosed, having a cylinder drum (2), which has at least one cylinder (5) in which a piston (9) is arranged to move back and forth, and having a control plate (3), which on rotation of the cylinder drum (2) and control plate (3) relative to one another connects...     
5743090 Hydraulic torque transmitter and synchronizer Apr-28-1998
Two synchronous hydraulic polyphase motor-generators with axial cylinders are connected by rigid or flexible pipes. One functions as a generator, the other as a motor to transmit torque and power. Sinusoidal piston motion is developed without the use of cams. The pistons cause columns of fluid to alternate...     
5752428 Hydraulic axial piston motor May-19-1998
A hydraulic axial piston motor (1) is disclosed, having a cylinder drum (4) which is connected, so that it is non-movable axially, to a shaft (3) and so that they rotate together, and which has at least one cylinder (5), for each cylinder a piston (6) arranged in the cylinder, which piston bears at its...     
5762477 Piston/slide shoe arrangement Jun-9-1998
A piston/slide shoe arrangement of a hydraulic piston machine is disclosed having a slide shoe in connection with a piston (4), with a friction reducing plastics material there between, wherein the plastics material, forming channel, extend into a through opening in the slide shoe in a direction towards...     
5765464 Reciprocating pistons of piston-type compressor Jun-16-1998
A piston-type compressor has at least two cylinders formed in a cylinder block which is formed in a compressor housing. A piston is slidably disposed within each of the cylinders. Each of the pistons includes a cylindrical main body and an engaging portion axially extending from the cylindrical body....     
5768974 Swash plate type compressor Jun-23-1998
A swash plate type compressor includes an improved thrust bearing for axially supporting the swash plate. The bearing is of a composite type, and includes at least two elastically deformable slide bearing elements. The swash plate and the cylinder block each have seat portions, which are of different...     
5771775 Device for guiding a piston Jun-30-1998
A compressor has a front housing, cylinder block and a rear housing. The housings and cylinder block are secured to one another by a plurality of bolts. A plurality of pistons reciprocally move in cylinder bores to compress gas. Each of said bolts has a shaft extending through the housings and the cylinder...     
5778757 Hydraulic axial piston machine Jul-14-1998
A hydraulic axial piston machine is disclosed, having a cylinder drum, which has at least one cylinder in which a piston is arranged to move back and forth, which piston bears by way of a slide shoe against a swash plate, wherein the cylinder drum and the swash plate are rotatable relative to one another,...     
5785503 Variable displacement compressor Jul-28-1998
A swash plate is mounted on a drive shaft in a crank chamber. The swash plate rotates integrally with the drive shaft and changes its inclination angle based on the pressure in the crank chamber. Pistons are provided in cylinder bores and coupled to the swash plate. The rotation of the swash plate is...     
5794514 Volumetric machine with curved liners Aug-18-1998
Apparatus is disclosed for articulating and correcting the trajectory of a piston in a volumetric machine with a plurality of pistons in a plurality of corresponding curved cylinders. The apparatus includes a piston seal ring positioned in a plane inclined to a plane of rotation of the pistons, with...     
5800147 Swash plate compressor Sep-1-1998
There is provided a swash plate compressor which ensures reduction of pulsation of refrigerant gas during operation thereof and at the same time enhances mechanical efficiency of the compressor. Refrigerant gas delivered from front-side compression chambers is introduced into a front-side discharge chamber,...     
5802954 Reciprocating piston compressor Sep-8-1998
A reciprocating piston type compressor for compressing refrigerant gas is provided with a main housing which includes a plurality of parallel cylinder bores arranged around the longitudinal axis of the cylinder block. The main housing has first and second cylinder blocks connected to each other by a...     
5809865 Piston-type compressor with reduced vibration Sep-22-1998
A compressor that is constructed for reduced vibration during operation includes a cylinder having at least three cylinder bores, pistons being respectively positioned in the cylinder bores, structure for reciprocating the pistons; and structure for defining a dead volume between each of the pistons...     
5819632 Variable-speed rotating drive Oct-13-1998
A variable-speed rotating drive is provided. A drive shaft terminates in a hreaded piston that is received in an internally threaded cylinder. A plurality of linear actuators are distributed evenly about the circumferential periphery of the internally threaded cylinder. The drive shaft is mechanically...     
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