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Class 417/470 - Biasing means effects induction stroke of abutment driven, vacuum producing pumping member


Subclass of Class 417 - Pumps
Definition: Apparatus in which the expansible chamber pump is disclosed
No. of patents: 114
Last issue date: 02/22/2011


1      
NumberTitleIssue Date
7891959Piston pump
A piston pump includes a pump housing having a suction port and a discharge port. A piston is mounted in a bore of the pump housing and forms a pump chamber. Suction and discharge valves are provided on the opposite sides of the pump chamber, respectively. The sucti...
02/22/2011
7794216High-pressure pump
A plunger is inserted into a slide hole of a cylinder body provided between a pressurizing chamber and a drive cam, so as to reciprocate within the slide hole. The drive cam and a coil spring move the plunger toward the drive cam so that fuel is sucked into the pres...
09/14/2010
7789639Piston pump
A piston pump is proposed, having a pump housing, in which housing a pump piston is guided axially movably, so that upon an actuation of the pump piston, a fluid is pumped from an intake side to a compression side, via a pump chamber bordering on the pump piston, th...
09/07/2010
7665976High pressure fuel pump for internal combustion engine
A high pressure fuel pump for an internal combustion engine having a cylinder, a plunger slidably fitted in the cylinder and a seal mechanism for blocking fuel leakage from an end of a sliding portion between the cylinder and the plunger and also for preventing an l...
02/23/2010
7513756Fuel supply pump and tappet structure body
A fuel supply pump with a large fuel discharge amount and a tappet structure body, which are suitably used for an accumulated pressure-type fuel injection device that mechanically amplifies pressure, is provided. A fuel supply pump has a tappet structural body and a...
04/07/2009
7488161High pressure pump having downsized structure
A high pressure pump has a fuel passage and a pump chamber. Fuel flows into the pump chamber through the fuel passage. The high pressure pump includes a valve member and a plunger. The valve member is movable along a movable axis in a substantially axial direction o...
02/10/2009
7478998Conveyor device
The invention relates to a supply device for the supply of pressure fluid into at least one vehicle brake, into a pressure fluid reservoir or into a pressure fluid accumulator, with a pressure fluid inlet and a pressure fluid outlet as well as with the following fea...
01/20/2009
7367788Pump for antilock braking system in vehicle
A pump including a main body having a piston provided in a portion of the main body, the piston being configured to reciprocate linearly. A piston spring may be provided within the main body and configured to bias the piston toward an end of the main body. Further, ...
05/06/2008
7364410Pressure storage structure for use in air
A pressure storage structure for use in air is disclosed. The structure has a main body characterized in that the main body has been secured and the main body includes a plurality of air chambers, each chamber has an open end, and the chamber contains a piston, an e...
04/29/2008
7347186High-pressure pump for a fuel, with sump in communication with the fuel
The pump (7) is provided with a body (16) having a compartment (17), and with at least one pumping element (13) that moves in a cylinder (12) in communication with the compartment (17), to raise the pressure of the fuel. The...
03/25/2008
7318416Liquid fuel pump
A liquid fuel system for an internal combustion engine includes a fuel supply line, a fuel pump connected to the supply line and having an outlet to a carburetor or a liquid fuel injector. A mechanical contact between the pump and a component of the internal combust...
01/15/2008
7318539Pump drive unit for battery operated fluid dispensers
A battery operated, handheld fluid dispenser comprises a supply container having a body portion and a narrow neck extending upwardly therefrom. A pump and discharge unit is mounted on the upper end of the neck and comprises a pump diaphragm and pump chamber for pump...
01/15/2008
7314353Pump assembly for transporting a cooling fluid
A pump assembly includes a cam member arranged to rotate about an axis, and a piston pump having a cylinder body with a biased piston drivingly displaceable within the cylinder body and engageable with the cam member such that rotation of the cam member corresponds ...
01/01/2008
7314351Fuel supply pump capable of lubricating cam bearings
A fuel supply pump uses a low-pressure supply pump for pumping up a low-pressure fuel, and a pump element having a plunger for increasing pressure of the low-pressure fuel supplied by the low-pressure supply pump. Part of the low-pressure fuel discharged from the lo...
01/01/2008
7311087Fuel pump with a guided tappet assembly and methods for guiding and assembly
A fuel pump for an internal combustion engine including a fuel pump housing, a cylindrical bore having a central axis and being defined by a bore wall surface, a receiving hole formed in the housing, and a tappet assembly received in the cylinder bore. The tappet as...
12/25/2007
7287967High-pressure pump having small initial axial force of a clamping bolt
A high pressure pump for preventing distortion of a sealing surface or a cylinder form. The high pressure pump has an intermediate member including a cylinder body having a pressurizing chamber communicated with a cylinder accommodating a plunger. Fluid in the press...
10/30/2007
7278835Piston pump
A piston pump for brake systems employs a pulsation-smoothing device that functions especially well in the region of the outlet valve. As a result, substantially less noise occurs, and the durability of the piston pump is substantially better. The piston pump is use...
10/09/2007
7273003Plunger pump
A plunger pump, includes: a plunger pump unit including a pump chamber and a plunger for pressing a hydraulic fluid in the pump chamber to perform a discharging operation of the hydraulic fluid; a motor; and a cam portion driven by the motor to rotate and press the ...
09/25/2007
7273036High-pressure fuel pump with a ball valve in the low-pressure inlet
A high-pressure a radial piston fuel pump in which the intake valves are embodied as ball valves, which has an advantageous effect on the efficiency of the high-pressure fuel pump. Moreover, the production and assembly of the high-pressure fuel pump of the invention...
09/25/2007
7216631Flow damper for common rail fuel injection apparatus
A flow damper is provided with a clearance to absorb a deformation occurring in proximate to a lower end of the valve body by the clearance on an entire outer circumference of a lower side of a large diameter portion of a piston. By the configuration in this manner,...
05/15/2007
7137792Piston pump for high viscous materials
In a piston pump (1) having a differential piston (12) positioned in a cylindrical housing (11) and translationally drivable, a first pressure chamber (13) of the differential piston (12) is connectable to a second pressure chamber...
11/21/2006
7121810High-pressure pump having small initial axial force of a clamping bolt
A high pressure pump for preventing distortion of a sealing surface or a cylinder form. The high pressure pump has an intermediate member including a cylinder body having a pressurizing chamber communicated with a cylinder accommodating a plunger. Fluid in the press...
10/17/2006
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
7107967Fuel supply pump having inner lubricating groove
A fuel supply pump includes a housing, a camshaft and a cam ring. The camshaft is rotatably supported in the housing. The cam ring is supported around a cam portion of the camshaft such that the cam ring is rotatable with respect to the cam portion. A washer member ...
09/19/2006
7108491High pressure pump
A piston (6) of a piston pump unit (2), which can be displaced in a translatory manner, is guided in a cylinder bore (7). The piston (6) is driven by a crank drive (13) comprising an eccentric element (15) which is arranged ...
09/19/2006
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
7048153Foam dispensing article
A foam dispensing article is provided which includes a reservoir for receiving a liquid product and an operating unit for dispensing foam as an air-liquid mixture. The unit includes an air pump, a liquid pump concentrically surrounded at least partially by the air p...
05/23/2006
7033149Medium pump adapted for ease of disassembly and assembly
A medium pump for a motor includes a pump case with a pump cylinder and a pump piston positioned displacaebly in the pump cylinder in the direction of a pump axle. The pump piston rotates about the pump axle by running off an oblique control surface and realizes axi...
04/25/2006
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
7018181Swashplate pump
A piston pump assembly with a rotatingly driven swashplate in driving relationship with a rocker arm and piston engaged with one end of the rocker arm. A spring urges the rocker arm and piston into contact with an annular ring carried by a bearing in the swashplate....
03/28/2006
7008198Cam operated pump having lost motion shuttle
A peristaltic piston pump driven by a dedicated pump cam disposed on a camshaft of an engine. A plurality of valve-opening cams are disposed along the camshaft. The pump cam has a plurality of lobes equal in number to the number of valve cams and each pump lobe is d...
03/07/2006
7004733Piston pump
A piston pump for brake systems the region of the outlet valve is provided with a pressure chamber, an opposing chamber, and a flexible wall that divides the pressure chamber from the opposing chamber. The flexible wall has an elastically resilient diaphragm that is...
02/28/2006
7004358Dispenser
A dispenser has a seal disk (30), a valve member (40), a plunger guide block (50), a motor (3), which rotates a cam-follower guide block (60), and an end cam (5). The seal disk (30) has communication holes (31)...
02/28/2006
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
6978769Method of controlling the injection of fuel into a combustion chamber and a fuel injection device for performing said method
A method of controlling the fuel injection to a combustion chamber (4), comprises the steps of: supplying fuel to a pump (2), which has a piston (7) reciprocating in the a cylinder (6), pressurizing the fuel by applying a force onto the p...
12/27/2005
6959694Fuel injection system for an internal combustion engine
The fuel injection system has a high-pressure pump which pumps fuel into a reservoir to be supplied to injectors disposed at the engine cylinders. A feed pump supplies fuel to the high-pressure pump. The high-pressure pump has at least one pump element including a p...
11/01/2005
6957872Integrated pre-charge for controlled brake systems
First and second pumps are integral in that the pumps are driven by a common motor. The first pump is driven in pumping motion by an eccentric disposed on the motor shaft and the second pump is driven in pumping motion by an end of the motor shaft. The first pump ca...
10/25/2005
6895992Fuel pump for inter-cylinder direct fuel injection apparatus
Disclosed herein is a fuel pump for an inter-cylinder direct fuel injection apparatus, in which occurrence of corrosion and attrition caused by cavitation or erosion can be suppressed, their resistance against the environment can be improved, and an excellent lifeti...
05/24/2005
6884045Hydraulically powered diaphragm pump with pretensioned diaphragm
A hydraulically driven diaphragm pump with a diaphragm clamped at its edge between a pump body and a pump cover separating a delivery chamber from a hydraulic chamber and pretensioned in the direction of its intake stroke by spring force. A hydraulic diaphragm drive...
04/26/2005
6866489Piston pump
The present invention related to a piston pump, in particular for controllable brake systems such as ABS or ESP, wherein a working chamber of the pump in front of a piston is delimited by a pressure valve, and a resetting spring with its one end is supported on a va...
03/15/2005
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