Matches 1 - 50 out of 94 1 2 >


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US20110206549 Bi-Rotational Hydraulic Motor With Optional Case Drain  
A bi-rotational hydraulic motor having a selectively pluggable case drain with check valves incorporated into the thrust plate allowing excess lubrication fluid to pass from the bearings into the...
US20110085928 GEROLLER HYDRAULIC MOTOR WITH ANTI-COGGING STRUCTURE  
A hydraulic motor 10 receives pressurized fluid from a source 98 controlled by a human operator to convert the energy in the hydraulic fluid to a rotational output to propel a drive wheel 91 of a...
US20110217199 DOWNHOLE POSITIVE DISPLACEMENT MOTOR  
A downhole positive displacement motor converts hydraulic fluid pressure into rotational torque. The motor includes a non-helical rotor and stator, and upper and lower valve assemblies each...
US20100054979 POSITIVE-DISPLACEMENT MACHINE DESIGN (VARIANTS)  
In the first variant, the device comprises a stator and a rotor eccentrically mounted in the stator. A planetary train consists of large and small gear wheels. The large gear wheel is fixedly...
US20070059194 Rotor apparatus of pump  
To provide a rotor apparatus of a pump in which pressure release in the air gap between an oil seal and an inner rotor is conducted smoothly and good durability and sealing ability of the oil seal...
US20140023543 COMBINED MOTOR AND BRAKE WITH ROTATING BRAKE-RELEASE PISTON  
The present disclosure relates to a combined hydraulic motor and brake including a hydraulic motor having a hydraulic motor housing, a drive shaft assembly that is driven by the hydraulic motor, a...
US20130068328 Gerotor Pump Assembly and Engine Fluid Delivery System Using a Gerotor Pump Assembly  
A gerotor pump assembly includes a gerotor pump and a relief valve assembly. The relief valve assembly is operably coupled to the pump housing and includes a relief valve inlet in fluid...
US20100316519 FRICTION DRIVE PUMP FOR TRANSFER CASES, ETC.  
A pump having an actuator mounted on a rotatable shaft, and a pump mounted on the shaft, which is selectively engageable with the actuator. When the actuator is actuated, the pump will receive...
US20150050176 Cycloidal Pinwheel Pair with Uniform Contact and One-tooth Difference  
Disclosed is a cycloidal pinwheel pair with uniform contact and one-tooth difference, comprising a stator and a rotor. Each gear tooth profile of the rotor has a modified recess provided...
US20060029509 Trochoid pump  
A trochoid pump for supplying hydraulic fluid to a power cylinder in a power steering system. The trochoid pump includes a housing formed therein with an annular operating chamber. Outer rotor...
US20100028186 HYDRAULIC MACHINE  
A hydraulic machine is disclosed with an externally toothed gear wheel (3) and an internally toothed ring, the gear wheel (3) and the ring together forming pressure pockets, which expand and...
US20070253855 Pump Apparatus and Power Steering  
In order to realize cost reduction in a gear pump apparatus by reducing form accuracy of a gear while securing pump performance, a running-in coating is provided on a tooth sliding contact portion...
US20110189042 Oil Pump With Dual Scavenging For a Twin Cam Engine  
The present invention is an oil pump used in combination with a twin cam type engine, such as a Harley Davidson type A or type B engine, that includes a first high pressure georotor and cam chest...
US20060039815 Fluid displacement pump  
An internal gear fluid displacement pump. The fluid displacement pump includes an outer gear having internal teeth disposed about an inner surface thereof, an annular element constituting the...
US20050063851 Gerotor pumps and methods of manufacture therefor  
Improved gerotor pumps (10, 100, 150, 180, 210, 230, 260, 270, 310, 340, 370, 400) each featuring an outer rotor (18, 184, 202) of a gerotor set (12, 186, 204, 344) located laterally with respect...
US20090116989 Oil pump rotor  
An oil pump rotor for use in an oil pump includes an inner rotor having (n: ā€œnā€ is a natural number) external teeth, an outer rotor having (n+1) internal teeth meshing with the external teeth, and...
US20140037487 GEROTOR DEVICE ROLLER POCKET GEOMETRY  
A gerotor device includes a rotor having outwardly extending teeth and a stator having inwardly extending teeth. The inwardly extending teeth are formed by rollers each of which is received in a...
US20080003124 Hydrostatic Rotary Cylinder Engine  
The invention relates to a hydrostatic, slow-speed rotary cylinder engine comprising a power part (1) which acts as an output, said power part comprising a central, stationary stator (4), a rotary...
US20060210417 Inscribed gear pump  
An inscribed gear pump that provides a housing, an outer rotor formed with a plurality of inner teeth continuously at an internal circumference thereof which is rotatably provided to an inside of...
US20080247882 Split-Pressure Dual Pump Hydraulic Fluid Supply System for a Multi-Speed Transmission and Method  
A split-pressure, dual-pump system for supplying hydraulic fluid to a multi-speed transmission is provided. The system includes a low-pressure work circuit operatively connected to a fixed...
US20150132170 PUMP UNIT  
A pump unit includes a housing which has an outwardly open recess, in which a pump is arranged. The recess is closed by a cover. The pump unit also has a pressure relief valve which is arranged in...
US20130149180 INTERNAL GEAR PUMP  
In an internal gear pump that includes an inner gear having outer teeth and an outer gear having inner teeth, either the inner or outer teeth have a shape based on a tooth shape that is...
US20110250086 FRAME ROTATED HYDRAULIC MOTOR WITH IMPROVED PARKING BRAKE  
A rotary fluid pressure device includes a gerotor gear set having a ring gear and a star gear orbitally moveable about a longitudinal axis relative to the ring gear. The star gear includes an...
US20080038135 CORROSION RESISTANT HYDRAULIC MOTOR  
A corrosion resistant hydraulic motor includes a housing, an output shaft extending through an opening in the housing, a sealing member contacting the output shaft and a water proof coating...
US20090152009 Nano particle reinforced polymer element for stator and rotor assembly  
A nano particle reinforced polymer element of a stator and rotor assembly for a power section of a positive displacement fluid motor or a progressive cavity pump. Nano-sized particles are blended...
US20130330222 METHOD FOR PRODUCING THE TOOTH SHAPE OF THE INNER AND OUTER RING OF AN ANNULAR GEAR MACHINE AND TOOTHED RING PRODUCED BY MEANS OF SAID METHOD  
In producing tooth shapes of two toothed rings of an annular gear machine, a starting geometry of a first toothed ring, at least one quality criterion of the annular gear machine, and a desired...
US20080145255 Hydraulic pump for vehicle  
A hydraulic pump for a vehicle includes: a block; a pulley receiving an engine torque and rotating; a pump housing attached to the block; an outer rotor mounted in the pump housing; an inner rotor...
US20050214149 Displacement pump with variable volume flow  
A displacement pump with variable volume flow having a casing; a chamber with an inlet opening on a low pressure side and an outlet opening on a high pressure side for a fluid; an internal rotor...
US20070134119 Hydraulic machine  
A hydraulic machine has a gear wheel (2) with outwardly extending teeth and a gear ring (4) with inwardly extending teeth formed by rollers each of which is supported in a pocket (8) in the gear...
US20100060074 ROTARY PUMP AND BRAKE DEVICE IN WHICH ROTARY PUMP IS PROVIDED  
In an inner wall surface of a casing, grooves are formed that correspond to end faces of an outer rotor and an inner rotor, and seal members are disposed within the grooves, the seal members...
US20080240959 BRAKE RELEASING MECHANISM AND BRAKE SYSTEM  
An embodiment of a gerotor apparatus includes a housing including a first member. The first member includes a brake pin aperture formed therein. The apparatus also includes a brake pin at least...
US20100080721 ROTARY FLUID DEVICE WITH MULTI-LEVEL PHASE SHIFT CONTROL  
A method for controlling a rotary fluid device includes providing a rotary fluid device having a fluid displacement assembly and a plurality of control valves. The fluid displacement assembly...
US20060067849 Rotor structure of inscribed gear pump  
An inscribed gear rotor includes a housing forming a cylindrical space, a driven rotor including a plurality of inner gears, a driving rotor including a plurality of outer gears engaging with the...
US20140334958 Continuously Variable Transmission Provided with a Gerotor Pump  
A continuously variable transmission (CVT) provided with an integrated gerotor pump that also acts as a rotation blocker is described herein. In one illustrated embodiment, the gerotor pump is...
US20110171053 Rotary Motor for Compressible Media  
A rotary motor for compressible media, containing at least one impellor and at least one stator mounted between two mutually coupled and concurrently mounted bearing plates, adjusted for a...
US20090317277 COOLING SYSTEM FOR GEROTOR MOTOR  
A hydraulic motor having a cooling system includes a stator, a rotor that rotates and orbits in the stator, a drive link connected to the rotor, and a housing connected with the stator. The...
US20050145213 Electric power generator assembly  
An electric power generator assembly comprises a rotary piston engine having a housing, which defines a chamber. A rotary piston having an oval contour is rotatably guided in this chamber. A...
US20140105775 GEROTOR MOTOR BALANCING PLATE STRUCTURE  
A gerotor device includes a valving plate, a balancing plate structure, and a rotor positioned between the valving plate and the balancing plate structure. High pressure fluid flowing from the...
US20070140887 Method for Imparting Residual Compressive Stress in Metal Parts  
A method of hardening metal parts, such as a rotor or drive link, and parts thus produced. Preferably the method includes imparting residual compressive stresses into the metal parts and uses...
US20140083086 GEROTOR PUMP, A GEROTOR MOTOR AND A GEROTOR TRANSMISSION SYSTEM  
A gerotor pump (1) comprising; a housing (2) which comprises a first and a second supply socket (18a, 18b; 19a, 19b), an inner rotor (4); and an outer rotor (5) rotatably located relative the...
US20090087333 Gerotor pump  
A gerotor pump comprises a rotor chamber having a longitudinally extending central axis, an outer rotor rotatable in the rotor chamber with a radial clearance between an outer periphery of the...
US20100176358 INTEGRATED HYDRAULIC MOTOR AND WINCH  
Hydraulic powered assemblies 10 and 110 are disclosed. The assembly 10 includes a support unit 12, a hydraulic motor 14, and a driven member 16 that is integral with the hydraulic motor 14. The...
US20100270289 Hot Melt Application System  
Hot melt adhesive pellets are melted and pressure pumped in a controlled application pattern on the substrate at the application site. The high frequency power supply, induction heated melting...
US20140154125 GEAR RING PUMP  
The invention relates to a gear ring pump, in particular for use in small pump assemblies which are preferably driven by an electric motor, which are produced as pump kits, and which are used in...
US20060188381 Seal assembly for hydraulic pump output shaft  
A seal assembly for a hydraulic pump is provided. The assembly includes a spacer ring, a rotor having a first side and a second side, the first side engaging the spacer ring, and a spring-loaded...
US20140152084 ROTATING PUMP AND BRAKE SYSTEM USING SAME  
A rotating pump includes an outer rotor and an inner rotor. The inner and outer rotors are rotated by a drive shaft between a first side plate and a second side plate to pump put fluid. The first...
US20090291009 Rotary piston machine  
A rotary piston machine 10 includes an enclosure 12 having a cavity 14 therein with arcuate side walls 16a,b,c defining a plurality of arcuate recesses 18a,b,c and a piston member 20 rotationally...
US20100008797 ELECTRIC PUMP UNIT AND ELECTRIC OIL PUMP  
An electric pump unit which comprises an outer rotor having a trochoidal tooth profile and an inner rotor which meshes with the outer rotor in such a state the inner rotor and the outer rotor are...
US20130183182 STATOR OF A GEROTOR DEVICE AND A METHOD FOR MANUFACTURING ROLLER POCKETS IN A STATOR OF A GEROTOR DEVICE  
A method for manufacturing roller pockets in a stator of a gerotor device generally includes providing a stator having a cavity including a generally cylindrical section defining a central axis...
US20130028778 STATOR OF A GEROTOR DEVICE AND A METHOD FOR MANUFACTURING ROLLER POCKETS IN A STATOR OF A GEROTOR DEVICE  
A method for manufacturing roller pockets in a stator of a gerotor device generally includes providing a stator having a cavity including a generally cylindrical section defining a central axis...

Matches 1 - 50 out of 94 1 2 >