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Class 417/471 - Biasing means effects eduction stroke of abutment driven, pressure producing pumping member


Subclass of Class 417 - Pumps
Definition: Apparatus in which the expansible chamber-type pump is disclosed
No. of patents: 39
Last issue date: 10/05/2010


NumberTitleIssue Date
7806671Piston pump
A piston pump includes a piston for increasing and decreasing the volume of a pump chamber formed in a cylinder bore of a cylinder member, by axially reciprocating movement thereof; a suction valve provided in the piston, and opening and closing when the volume of t...
10/05/2010
7281372Hydraulic controller and hydraulic drive unit provided with said hydraulic controller
A hydraulic controller in which driving sound and the number of parts can be reduced, and a long service life can be realized, and a hydraulic drive unit provided with said hydraulic controller. The hydraulic controller for a hydraulic drive unit includes a housing ...
10/16/2007
7114928High-pressure fuel pump and assembly structure of high-pressure pump
A high pressure pump for decreasing an initial axial force of a clamping bolt and preventing distortion of a sealing surface and a cylinder form. The high pressure pump has an intermediate member including a cylinder body. The cylinder body has a pressurizing chambe...
10/03/2006
7048521High pressure fuel supply pump with an intake valve member and a discharge valve member aligned along a plunger axis
In a high pressure fuel supply pump, a housing is provided with a through-hole having a step. A plunger is slidably accommodated in the through-hole on an axial end side thereof. An intake valve member is positioned in the through-hole on an axially opposite side to...
05/23/2006
7021911Reverse-ported pump
A pump used in vehicle controlled braking systems provides a reverse direction of flow through a cylinder bore of the pump and utilizes an inlet check valve located outside of the piston at the end of the cylinder bore opposite the piston, in conjunction with an out...
04/04/2006
6991438Radial piston pump with piston rod elements in rolling contact with the pump pistons
In a piston pump for providing high-pressure fuel in a common-rail fuel injection system including a camshaft (2), which is mounted rotatably in a pump housing (1) and which has at least one eccentric cam 93) for operating a pump piston (4, 1...
01/31/2006
6945926Muscle energy converter
A muscle energy converter for a patient. The converter includes a casing having a fluid port. The converter includes a bellows mechanism disposed in the casing adapted to contain fluid. The converter includes an actuator arm mechanism adapted to be attached to a ten...
09/20/2005
6764286Piston pump with pump inlet check valve
A piston pump comprises cylinder attached within a cavity of a pump housing. An outlet check valve seat is defined about an outlet of the cylinder. A piston is slidably received in a bore of the cylinder and has a first passageway formed therein. A cylinder head enc...
07/20/2004
6722866Pump system for delivering cryogenic liquids
A pump system for delivering cryogenic liquids is proposed that is suitable, for example, for refueling motor vehicles with H2. It consists of a container for receiving the cryogenic liquid, in which at least one pump is arranged that is designed as a rec...
04/20/2004
6655933CAM operated fuel pump with split function follower springs
In order to provide a fuel pump in which a piston spring arrangement can be made of inexpensive material, knocking noises of a piston are reduced, and components related to the piston are protected against breakdown, a piston-following spring is provided ...
12/02/2003
6499974Piston pump
A piston pump having a piston axially movable against the force of a spring within an operating chamber connected via check valves to an operating cylinder and a hydraulic medium supply. A section of the piston that extends into the operating chamber has ...
12/31/2002
6350107Radial piston pump for supplying a high fuel pressure
A radial piston pump for supplying high fuel pressure in fuel injection systems of internal combustion engines that include a common rail. Pistons, which are disposed in a respective cylinder chamber, each of the pistons have a plate connected to one end....
02/26/2002
6176348Multiple-pump system for lubricating
A lubricating system has a housing formed with an intake passage, a drive shaft extending longitudinally in the housing and carrying a plurality of longitudinally spaced worm gears, and respective pumps juxtaposed with the worm gears in the housing. Each ...
01/23/2001
6089141Plunger pump for water jet loom
The straightness of the piston of a water jet loom plunger pump for discharging water under a high pressure is maintained to allow its smooth movement with respect to the cylinder. For this, a roller guide is arranged at a reciprocal piston actuating mech...
07/18/2000
5752430High pressure fuel supply pump for engine
A high pressure fuel supply pump which is driven by a cam connected to an engine is composed of a cylinder, a plunger slidably disposed in the cylinder, a tappet linked to the cam, a coil spring biasing the tappet against the cam, a cylindrical guide for ...
05/19/1998
5415533Fuel injection pump for internal combustion engines
The invention relates to a fuel injection pump for internal combustion engines, having a pump piston guided in a cylinder bore of a pump body, which pump piston defines a pump work chamber in the cylinder bore and which is axially driven by a cam drive co...
05/16/1995
5374168Reciprocating piston fluid pump
A reciprocating piston fluid pump according to the present invention comprising: a pump driving section including a cam operated by an engine and a roller driven by the cam, the roller being provided at a lower end of a piston rod; a piston provided at an...
12/20/1994
5281013Integrated pressure generating and control device
The invention relates to a hydraulic device for braking the wheels of a vehicle, especially for wheel anti-lock and/or anti-slip functions, comprising, between a chamber of a master cylinder and at least one brake motor, a plurality of solenoid valves (36...
01/25/1994
5114580Combined hemofiltration and hemodialysis system
A hemodialysis system has a blood circuit and a hemofiltrate circuit interconnected at a hemofilter and an air collection chamber. If an infusion of sterile fluid to the returning blood is needed during the dialysis treatment, filtrate in the filtrate cir...
05/19/1992
4706848High efficiency battery operated water gun
The present invention is directed to a toy water gun which is battery operated. The present invention water gun has a housing which has a general configuration of a gun with a barrel and a handle. A water reservoir is located within the housing and a batt...
11/17/1987
4551071Diaphragm-type fuel pump
A fuel filter unit having a fuel inlet chamber is threadedly mounted on a fuel pump for easy detachment therefrom. A tubular holder is fixed to the fuel pump for receiving fuel flowing out of the fuel filter unit when the latter is replaced. The fuel filt...
11/05/1985
4541788Diaphragm fluid pump
In a diaphragm fluid pump which includes a diaphragm piston assembly assembled within a pump housing to form a pump chamber at one side thereof, the diaphragm piston assembly includes a diaphragm member secured in a fluid-tight manner at its outer periphe...
09/17/1985
4536139Diaphragm pump
A diaphragm pump particularly adapted for use as a fuel pump includes septe caps having pipe unions extending therefrom. The caps are snap-engageable with the pump body....
08/20/1985
4295414Diaphragm-type fuel pump
A diaphragm-type fuel pump defining therein an outlet chamber for supplying fuel to a carburetor. A return pipe is connected to the interior of the outlet chamber to permit return of vapors to the fuel tank. An outlet pipe communicates with the outlet cha...
10/20/1981
4290347Crashworthy fuel pump
A crashworthy fuel pump has a body in which is formed a fuel intake cavity, a fuel discharge cavity, and a fuel pumping chamber. The body has an open end around the periphery of which is formed a lip. A flexible diaphragm is insertable into the open end o...
09/22/1981
4282801Crashworthy fuel pump
A fuel pump improvement comprises a leak proof seal formed between the fuel pump body and pumping element. The fuel pump body and a housing are clamped together to form a unified fuel pump assembly....
08/11/1981
4278618Acceleration pump for a carburetor
An acceleration pump for a carburetor incorporating first and second pump levers rockably secured to the carburetor body and moved via an acceleration rod connected at one end to the pump lever and a throttle lever connected at one end to the acceleration...
07/14/1981
4276745Exhaust gas control apparatus
An improved exhaust gas control apparatus, which utilizes a 3-way catalyst for reducing the contents of harmful components in exhaust gas, incorporates a diaphragm type air pump for supplying secondary air, upstream of the catalyst, to the exhaust gas. A ...
07/07/1981
4256020Crashworthy fuel pump improvement
A fuel pump improvement comprises a lip formed around the periphery of the open end of a fuel pump body. The lip is bendable over the outer margin of a diaphragm to form a fluid seal therewith. A second seal is provided between the diaphragm and the lip t...
03/17/1981
4212316Control valve
A control valve for use in an automotive fuel pump. A housing is installed in the fuel pump and has a central circular opening therethrough the peripheral surface of which is curved. A valve member is movable relative to the circular opening and has an ou...
07/15/1980
4153394Fuel pump
A fuel pump comprises an outer casing, which is made by drawing a steel sheet, caulkedly fitted to a diecast lower body. The outer casing is constricted in three stages. The second stage contains a seal-receiving flange at the open-side end of a cup-shape...
05/08/1979
4130609Staged accelerator pump
An accelerator pump for providing additional fuel to the carburetor of an internal combustion engine during acceleration permits staged or sequential operation of the pump while employing simplified construction. The structure is arranged so that the acce...
12/19/1978
4099597Lubrication pump
A lubrication device employing a reciprocable plunger, as the actuating member, which is driven by a rotatable cam member through a pivoted rocker arm engaged with the plunger and having roller means engaging the cam, with the axis of the plunger, respect...
07/11/1978
4050861Diaphragm pump
A diaphragm fluid pump comprises a diaphragm piston assembly having a flexible diaphragm interposed and hermetically clamped at the outer rim thereof between upper and lower housings. The flexible diaphragm is integrally provided with a flexible sealing m...
09/27/1977
4015913Diaphragm air pump
A diaphragm air pump comprising a diaphragm assembly in a housing to define therewithin a compression chamber and connecting means for transmitting an actuating force from a shaft of an engine to said assembly. The air pump includes resilient means betwee...
04/05/1977
4006797Cam actuated lubrication pump
A lubrication pump comprises a housing having a cup-shaped member reciprocally mounted thereon, a rod secured to the member and disposed internally thereof, a piston slidably mounted on the rod to define an expansible working chamber between the piston an...
02/08/1977
3999899Diaphragm fluid pump
In a diaphragm fluid pump, a pump housing comprises a cylinder provided therein coaxially with an operating rod of a diaphragm piston assembly hermetically assembled within the housing, and a driving mechanism for the operating rod includes a piston eleme...
12/28/1976
3969045Diaphragm vacuum pump for vehicles
In a diaphragm vacuum pump for vehicles, a resilient cushion material is integrally secured on the diaphragm piston within the pressure reduction chamber of the pump to minimize the volume of the pressure reduction chamber when the diaphragm piston reache...
07/13/1976
3951046Push rod and tappet assembly
A push rod and tappet assembly for a cam actuated pump in which a tappet having a barbed shank is lightly press fitted, during assembly, part-way into the hollow end of the push rod so that during the initial operating cycle of the pump, as the cam on whi...
04/20/1976
 
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