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9032863 Cam follower roller device, notably for a fuel injection pump  
Cam follower roller device, notably for an internal combustion engine fuel injection pump, comprising a tappet (12) and a roller (14) mounted to rotate on the tappet and intended to press against...
8997627 Thermal engine with an improved valve system  
A radial thermal engine with an improved valve system is disclosed herein comprising intake and exhaust port valve assemblies fluidly connected to respective intake and exhaust ports contained...
8959906 Gas boosters  
One or more examples of the gas boosters described herein aim to provide a light weight gas booster configured to produce high output pressure levels at high volumes. Generally described, one or...
8894384 Multi-piston motor/pump  
A multi-piston motor/pump is disclosed particularly useful for air motor applications incorporating a cylinder block having a plurality of radially extending pistons and cylinders. Each cylinder...
8430017 Control device for a hydraulic motor  
A control device for controlling a speed of a hydraulic motor includes a housing defining a first void. A speed valve is disposed within the first void and is moveable between a first speed valve...
8382449 Fluid machine with radial cylinders  
A fluid machine with radial cylinders, includes cylinders being fixed with respect to a body wherein the cylinders are peripherally spaced in a rotation plane of a crank rotating with a driving...
8347778 Fluid-working machines  
A fluid-working machine comprises at least one primary working chamber such as a cylinder (4) of cyclically changing volume and primary valves (7) to control the connection of the at least one...
8225707 Hydraulic radial piston engine  
To avoid having to strip down a radial piston engine (1) into its individual components when it is disassembled, a rotary cylinder (5) has a collar (19) on which the rotary cylinder is supported...
8220380 Hydraulic unit  
The invention relates to a hydraulic group comprising a reservoir (28) for oil, in which a multiple piston pump (60) is arranged. The individual pumps (61) are cyclically driven by an eccentric...
8176838 Hydraulic machine arrangement  
A hydraulic machine arrangement includes at least one hydraulic machine having a plurality of pistons reciprocating within corresponding cylinders. The pistons can be driven by a cam to operate...
8132868 Hydraulic regenerative braking system for a vehicle  
A hydraulic regenerative braking system and method for a vehicle include a variable displacement hydraulic machine operable as a pump or a motor (22). The hydraulic machine facilitates connections...
8079298 Compact hydraulic mechanism with radial pistons  
A hydraulic mechanism including a cylinder block having radial pistons and mounted to rotate in a stationary casing, and a distribution cover that forms a portion of the casing that has feed and...
8061262 Pneumatic stepper motor  
A stepper motor suitable for use in a medical imaging environment has (a) a cylindrical central gear having an external surface with circumferentially distributed and radially directed teeth, (b)...
8052401 Double-acting radial piston hydraulic apparatus  
A hydraulic apparatus comprises a housing having a central axis; a plurality of radially-oriented piston-cylinder assemblies each including a cylinder supported by the housing and a piston movable...
8033210 Device for managing the displacement of a hydraulic motor or a group of hydraulic motors  
A motor having two series of distribution ducts each having two groups of ducts. The displacement selector is able to occupy a large displacement position in which the first groups of distribution...
7987823 Hybrid piston/rotary engine  
A Hybrid Piston/Rotary engine has a stationary elliptical housing with a circumscribed inner cam surface to provide thrust, and sides with bearing supports for rotation of a rotor, at least one...
7681490 Drive device  
The invention relates to a drive device for a piston pump of a braking system of a vehicle having at least one piston element displaced in the longitudinal direction in a housing between an upper...
7614337 Rotary radial piston machine  
A rotary displacement machine with radial pistons, comprising a supporting structure, with a main body and a cover, a centrally mounted distributor, a rotating unit consisting of a rotor provided...
7421986 Rotary radial internal combustion piston engine  
The engine comprises a housing, a rotor, which is mounted in the housing for rotation about its axis. The rotor has a pair radially opposite cylinders spaced radially and apart from its axis of...
7411320 Radially-activated engine  
A motor includes a plurality of linearly activated pistons, positioned radially around an axis, which are selectively and sequentially biased against on offset element to produce rotation of a...
7273004 Reciprocating machine  
The radial piston or reciprocating engine (1) has annularly juxtaposed, radially directed piston-cylinder units (2, 3). The outward stroke of the pistons (2) is controlled by the cam (11) of a...
7225721 Hydraulic motor  
The motor comprises a cam and a cylinder block mounted to rotate one relative to the other. The cam comprises a plurality of cam lobes and the cylinder block has a plurality of cylinders slidably...
7216579 Variable flow control devices, related applications, and related methods  
Devices for adjustably controlling a flow of fluid through a common passage and through first and second auxiliary passages are disclosed. The flow control devices may be used for controlling the...
7185579 Hydraulic radial piston motor  
A hydraulic motor having radial pistons, and comprising a cam, a cylinder block and a distributor. The cylinders of the cylinder block are connected to communication orifices (32A) situated in a...
7028600 Hydraulic radial piston engine  
A hydraulic radial piston engine has a lifting ring fixed to the casting, a rotor mounted opposite the lifting ring such that it is rotatable about an axis of rotation, multiple piston seats...
6895855 Hydraulic motors and pumps with engineered surfaces  
Engineered surface treatments are applied to different types of hydraulic motors and pumps to improve the life of the contacting surfaces in said motors and pumps. The engineered surface...
6846163 Rotary fluid machine having rotor segments on the outer periphery of a rotor core  
In a rotary fluid machine including pistons (37) reciprocally received in cylinders (33) provided in a rotor (27), and vanes (44) fitted in vane grooves provided in the rotor (27) for reciprocal...
6843162 Radial piston engine  
What is disclosed is a radial piston machine having a plurality of radial pistons each guided in a respective cylinder space, wherein the cylinder spaces may be connected with supply and drain...
6813989 Rotary compressor or pump  
A compressor having a fixed cylindrical casing, supporting a rotor having an externally driven input shaft extending rotatably and coaxially in the casing. The rotor includes piston chambers and...
6776135 Rotary engine  
The present invention provides a rotary engine having: a stationary cylinder with an intake aperture, an exhaust aperture, and an ignition aperture on the surface; a driving disk disposed inside...
6745667 Motor-pump aggregate  
The present invention relates to a motor-pump aggregate with a motor and a piston pump , more particularly for electronically controlled brake systems of motor vehicles, wherein pistons of the...
6655927 Radial piston pump with piston arrangement for controlling inlet/exit flow  
The radial piston pump possesses a pump housing in which a plurality of cylinder bores are provided having pump pistons placed therein which can be driven by a cam. Further, an arrangement is...
6651545 Fluid translating device  
It is desirable to deliver only the fluid that is used to do useful work and not waste energy. In the subject arrangement, selected ones of a plurality of pistons are held at their top dead center...
6637313 Rotary pump  
A rotary pump consists of a cam ring, a rotor disposed within the cam ring, and a pump body enclosing the cam ring and the rotor. The cam ring includes a cam surface having a centre of symmetry....
6619184 Hydraulic radial piston motor  
In order to reduce the shock that occurs in downshifting and up-shifting a hydraulic radial piston engine, a valve (1), which controls the displacement of the radial piston engine, is reversed...
6579073 Motor-pump assembly  
The present invention relates to a motor-and-pump assembly including an electric motor and a piston pump, in particular for slip-controlled brake systems of automotive vehicles, wherein pistons of...
6575078 Fluid motor having fluid actuated advancing elements to advance an advanceable part of the fluid motor relative to a stator part of the fluid motor  
A fluid motor includes a plurality of fluid actuated pistons 13 extending radially outwards from a stator and each having a cam follower bearing 14 at its outer end. A rotor surrounds the stator...
6494126 Radial piston hydraulic motor  
The invention relates to a radial-piston hydraulic motor (10), having at least one cylinder groups (1) placed in a stationary position, which. cylinder groups contain piston mechanisms moving...
6494127 Radial piston engine with guide rollers  
The invention concerns a technically optimized radial piston engine comprising a cam ring and a cylinder block arranged so as to rotate about an axis of rotation relative to the cam ring and...
6470786 Radial piston hydraulic engine  
The invention concerns a radial piston hydraulic engine (10), which includes a rotated box section (11), with which box section (11) a cam ring (12) is connected. The radial piston hydraulic...
6443047 Radial piston engine with roller guides  
A hydraulic radial piston machine having a lifting ring and having a cylinder block which is arranged with respect to the lifting ring in a manner allowing it to rotate about an axis of rotation...
6360647 Hydraulic rotating axial piston engine  
A hydraulic rotating axial piston engine has a housing enclosing a rotatable cylinder barrel. The barrel has a number of axial cylinders with a number of reciprocating pistons. The pistons...
6352016 Hydraulic power-assisted steering  
A hydraulic power steering system, in which the servomotor also acts as a steering damper. Damper valves are arranged on hydraulic lines between the servomotor and servo valve. In order to...
6347571 Radial piston motor with friction brake  
A drive device which has small dimensions an axial and radial directions. The small dimensions of the device are a result of a brake body of a friction brake provided in the drive device being...
6347572 Hydraulic motor having radial pistons and a single declutching selector  
A hydraulic motor comprising a cylinder block having at least a first group of radial cylinders, a reaction member mounted to rotate relative to the cylinder block, and an internal fluid...
6318235 Hydraulic motor cylinder-capacity selector for avoiding jarring when switching from one cylinder capacity to another  
A cylinder-capacity selector for a hydraulic motor having at least two active operating cylinder capacities and comprising having at least two main ducts. The selector includes three ports and...
6220208 Combustion engine having a rotatable cylinder block  
Combustion engine of the Otto or diesel type, including a cylinder block having at least one cylinder in which a piston with a connecting rod connected thereto are movably provided. The at least...
6186046 Hydraulic motor  
A hydraulic motor comprises a fixed case, a reaction member secured to the case, a cylinder block mounted to rotate relative thereto about an axis of rotation, and an internal fluid distributor...
6178869 Piston machine  
The axial piston machine may be used as a hydraulic pump or hydraulic motor. A rotor of the piston machine includes an outer part having a spherical inner surface and an inner part having a...
6092455 Hydraulic pressure transformer  
A hydraulic pressure transformer for the conversion of an input hydraulic power to an output hydraulic power includes a housing with a generally planar face surface and a plurality of ports...
Matches 1 - 50 out of 227 1 2 3 4 5 >