Class 418/267 - With fluid bias

Subclass of Class 418 - Rotary expansible chamber devices
Definition: Apparatus wherein fluid under pressure assists the resilient
No. of patents: 40
Last issue date: 05/13/2008

Number	Title	Issue Date
7371135	Vertical axis wind turbine rotor construction A Savonius vertical axis wind turbine (VAWT) rotor is easily and simply constructed while having enhanced functionality. The rotor includes a shaft that is vertical in use, a number (desirably at least four) of vane support hubs each having a number (desirably three...	05/13/2008
7354260	Pneumatic motor including a rotor in a cylinder between two covers in a shell from which air travels into the cylinder through the covers A pneumatic motor includes a shell, two covers, a cylinder and a rotor. The shell defines a space, at least one inlet in communication with the space and at least one outlet in communication with the space. Each of the covers defines at least one radial channel and ...	04/08/2008
7331411	Hydraulic traction system for vehicles A hydraulic traction system for vehicles is described. The system comprises a hydraulic vane motor mounted at each wheel of the vehicle, and equal number of identical hydraulic vane motors operated as engine driven pumps, and a control system for regulating the flow...	02/19/2008
7230348	Infuser augmented vertical wind turbine electrical generating system A wind turbine for generating electrical power having a vertical “Savonius rotor type” wind rotatable turbine with multiple fixed pitch blades and a rotatable wind inlet duct having an identical number of multiple infuser-shaped aerodynamic guides as the pitch b...	06/12/2007
7114932	Valve-free oxygen concentrator featuring reversible compressors A pivoting vane rotary compressor includes a housing having a generally pear-shaped chamber. A rotor mounted within the chamber defines a main and constricted chamber regions. Reversible intake and exhaust ports alternately introduce air into and exhaust air from th...	10/03/2006
6939117	Rotary apparatus A rotary machine (10) comprises an inner housing (12) having valving means (14) which includes a shaft (15) for directing working fluid through the machine (10) and, an outer housing (16) within which the inner housing resid...	09/06/2005
6913451	Vacuum pump with fail-safe vanes A vacuum vane pump for generating a vacuum condition for aircraft instruments includes a rotor having a peripheral surface eccentrically mounted in a housing having a confrontingly opposed inner surface so that the opposed surfaces define a crescent-shaped chamber. ...	07/05/2005
6910873	Self regulating rotor A machine that is a self regulating rotor with a set of cups or vanes that are pivotally attached about a central axis such that they form a closed three dimensional shape when closed, and when rotated into an open orientation form an S-shaped rotor, when viewed as ...	06/28/2005
6554596	Fluid turbine device A rotor device is provided for converting the energy of a flowing fluid, such as air or water, into mechanical energy. The device comprises a rotor mounted within a housing. Two or more vanes having inner and outer ends extend parallel to the axis of the ...	04/29/2003
6435852	Rotary pump A rotary pump includes a casing having a rotator rotatably received therein and a shaft fixedly extends through the rotator. The shaft is located eccentrically in the casing. An inlet and an outlet are defined through the casing and a receiving area is de...	08/20/2002
6027323	Hydraulic vane machine A hydraulic vane machine has a rotor, in which several vanes are arranged radially movable, and a stator having a stator bore, whose wall is made as a guiding contour on which the vanes bear. It is intended to prolong the life of such a machine, even when...	02/22/2000
5961302	Liquid-sealed vane oscillator A liquid-sealed vane oscillator includes a housing defining a cavity corresponding to part of a virtual annulus centered around, and extending at least 180° about, an axis of rotation and delimited by first and second ends. A vane is mounted rotatably wi...	10/05/1999
5743718	Compressed air driven disposable hand tool having a rotor with radially moving vanes A fluid reaction device (10) is provided having a rotor (90) with vanes (92) pivotably connected thereto. The device (10) includes an entrance (30) for elevated pressure fluid and an outlet (40) for discharge of the fluid after contacting the rotor (90). ...	04/28/1998
5676532	Adjustable one-way rotary liquid pumping device An adjustable one-way rotary liquid pumping device including a housing, a cover fixedly engaged with the housing, a first bearing a first bearing fitted in the housing, a second bearing fitted in the cover, an axle extending through the housing and the co...	10/14/1997
5407327	Vane cell pump A vane cell pump with a housing ring closed on the face end and with a rotary piston that revolves eccentrically to the inner wall of the housing ring, which rotary piston encloses at least one supply chamber with the inner wall of the housing ring and wi...	04/18/1995
5271720	Rotary vane pump with supplemental pumping means A vane pump has a plurality of outwardly spring loaded vanes mounted within slots respectively formed in a rotor. The internal surface of the stator of the pump is of cylindrical form, and end plates at the opposite ends of the rotor and stator have inlet...	12/21/1993
5083909	Seawater hydraulic vane type pump A vane type hydraulic energy translating device for pumping filtered seawater and which uses seawater as a lubricating fluid. The pump is a compact, light weight design in which the bearings and certain other critical components are fabricated from corros...	01/28/1992
4822265	Pump rotor A rotary sliding vane fluid pump having an open rotor and radially extended arms forming slots that support the radially extending vanes. The relative position of the vanes and the inlet and discharge ports provide sealing by the vanes to the pump housing...	04/18/1989
4806085	Rotary hydraulic piston motor with fluid path in pistons for inlet pressure A reversible hydraulic motor has a forward and a reverse drive section, each separated by a separating plate. Each section has an outer ring, end plate and inner rotor forming a chamber therebetween. Each rotor has a pair of radial slots, separated by 180...	02/21/1989
4782258	Hybrid electro-pneumatic robot joint actuator A hybrid robotic joint actuator utilizing both the quick response time of an electric motor and the high torque capacity of a pneumatic motor. In one preferred embodiment, the hybrid motor includes a pneumatic rotor coupled to an electric rotor in a commo...	11/01/1988
4738596	Fuel pumping apparatus A fuel pumping apparatus for supplying fuel to a compression ignition engine includes a high pressure pump to which fuel is supplied from the outlet of a low pressure pump of the vane type. The vanes of the pump are mounted in slots in the pump rotor and ...	04/19/1988
4666386	Rotary pump A rotary pump has a housing 1 with a driven rotor 7 installed in the housing 1. Vanes 12 are connected around the periphery of the rotor 7. Helical springs 14 are supported against rotor 7, which, acting on an inner surface of vanes 12, press the free end...	05/19/1987
4552512	Standby water-powered basement sump pump A water-powered positive displacement auxiliary sump pump has a drive water inlet connected to the municipal water supply via a float actuated pilot valve. The pump is designed to be constructed chiefly of molded plastic supported by an exit manifold conn...	11/12/1985
4551080	Variable displacement sliding vane pump/hydraulic motor This invention, a variable displacement sliding vane pump/hydraulic motor, incorporates an eccentric chamber in which a rotor with a plurality of axially and radially moveable sliding vanes rotates. Axial positioning of the sliding vanes is accomplished b...	11/05/1985
4516918	Pump assembly An improved pump assembly includes a plurality of pumping elements which rotate with a rotor and engage an inner surface of a cam ring to define pumping chambers which hold liquid and/or air. As the pumping chambers move along an inlet arc, liquid flows t...	05/14/1985
4507068	Vane type rotary machine A vane-type rotary machine suitable for use as a compressor, pump or the like, having a cylinder provided with an inner peripheral contour expressed by an epitrochoid-like curve having at least one lobe, a cylindrical rotor contacting the inner peripheral...	03/26/1985
4498853	Vane-type compressor A vane-type compressor of the lubrication type in which pressure applied to vane bottoms is controlled to prevent vane breakage and excessive wear. A rotor is disposed between a rotor housing and a pair of side housings with vanes slidingly disposed withi...	02/12/1985
4376620	Seawater hydraulic vane-type motor A vane type hydraulic motor which is operable with seawater as the hydraulic fluid for undersea diver use. The motor is compact, lightweight and is lubricated by the seawater working fluid. The motor uses corrosion resistant materials with the requisite f...	03/15/1983
4374632	Vane control for a vane motor A vane motor which uses two-lip vanes has a fluid restrictor in a fluid passage which connects the inner and outer ends of each vane. High pressure fluid is supplied to the inner end of each vane as it traverses the transfer and sealing zone. This fluid f...	02/22/1983
4259044	Fuel pump assembly A pump for pumping low viscosity fuels has a cam defining a pumping chamber bore wall. A plurality of slippers define pumping pockets located within the bore wall. The slippers are rotated through inlet arcs and through outlet arcs. A pair of orifices of ...	03/31/1981
4253806	Low speed hydraulic motor with counter balanced planetating drive ring and spring biased vanes A drive ring for a rotary expansible chamber hydraulic motor has driving gear teeth on its inner periphery and is constrained against other than planetating motion by a series of angularly spaced eccentric bearings rotatably mounted in fixed port plates b...	03/03/1981
4080124	Optimum porting configuration for a slipper seal pump A slipper vane seal pump has a porting plate and pumping chamber combination having optimum slipper seal porting configuration so that in a typical ten slipper pump the spacing from the end of the constant tangent arc to the opening of the inlet port is n...	03/21/1978
4075930	Pneumatic actuator system and method A system for precisely positioning a linearly movable output member incorporates an improved nonexpansion, bi-directional vane motor whose internal gas carrying chamber is configured to prevent radial vane reciprocation while the vanes of the motor are un...	02/28/1978
4009973	Seal for hydraulic pumps and motors A seal for a vane type fluid pressure motor or pump. The motor or pump comprises a housing having a chamber receiving a rotor, an elongated bore extends through the housing and the rotor and receives a shaft which is drivingly engaged by the motor through...	03/01/1977
3981648	Power transmission A rotary sliding vane type of fluid pump or motor has a rotor with loosely fitted vanes radially slidable in the rotor slots to follow the varying contour of the cam ring. Hydraulic pressure to project the vanes outwardly is fed to their inner ends along ...	09/21/1976
3981637	Variable displacement rotary machine with oscillating piston slides A rotary piston engine comprising a stator and a rotor including piston slides in the rotor, and working chambers between the rotor and the stator wherein movable parts are provided in the stator for adjusting the volume of the working chambers....	09/21/1976
3971347	Rotary internal combustion engine A rotary internal combustion engine comprising a cylindrical housing comprised of an annular intermediate member and a pair of end plates, one on each side of the annular member, and defining an enclosed, generally cylindrical, rotor chamber. A shaft is j...	07/27/1976
3960116	Rotary engine An annular ring is closed on each side by a side plate secured thereto thus forming a cylindrical chamber or casing. A rotor is mounted on a shaft which is supported axially by the side plates, the rotor being within the chamber. A plurality of pistons ar...	06/01/1976
3938478	Rotary internal combustion engine A concentric, valveless internal combustion engine is provided, consisting essentially of a rotary piston which revolves in a casing about a central shaft. The rotary piston contains combustion cavities distributed equidistantly around its perimetral wall...	02/17/1976

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Class 418/267 - With fluid bias