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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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US20090116989 |
Oil pump rotor
An oil pump rotor for use in an oil pump includes an inner rotor having (n: “n” is a natural number) external teeth, an outer rotor having (n+1) internal teeth meshing with the external teeth, and... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |