Class 417/511 - Piston carried distributor, one frictionally engages chamber wall, drive rod integral with other (e.g., piston driven by valve element through lost motion connection, etc.)

Subclass of Class 417 - Pumps
Definition: Apparatus in which the valve element is carried on or within
No. of patents: 53
Last issue date: 06/03/2008

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Number	Title	Issue Date
7381035	Piston pump with check shaft A pump for use with a dispensing unit of a liquid hot melt adhesive system, dispensing units including the pump, and a method of operating a pump for pumping a liquid like liquid hot melt adhesive. The pump has a piston movable within a pumping chamber for transferr...	06/03/2008
7108059	Downhole pump The present invention is directed to a downhole pump assembly having a housing, a standing valve located near the lower end of the housing, a plunger disposed in the chamber of the housing below the upper and lower internal shoulders thereof and adapted for reciproc...	09/19/2006
7104613	Pump with reciprocating high pressure seal and valve for vehicle braking systems A pump assembly with a combination reciprocating high-pressure seal and fluid inlet check valve for use within brake systems. The pump assembly comprises a housing having a bore formed therethrough and a piston disposed within the bore for reciprocal movement therei...	09/12/2006
7100753	Torque converter clutch apply valve A replacement torque converter clutch (TCC) apply valve for regulating the application of the torque converter clutch within an automatic transmission. The present TCC apply valve includes a valve piston having an expandable seal located at the primary wear location...	09/05/2006
7073211	Hydraulic plumber's friend A hydraulic plumber's friend has a cylindrical body, a lid, a compression assembly, a tapered end cap and a nozzle assembly. The cylindrical body has an open bottom and holds water to be injected into a clogged pipe. The compression assembly has a drive shaft and a ...	07/11/2006
7029249	Electronic micro-pump A micropump provided with a cylindrical body (1) containing a measuring chamber (10) defined by a piston (2) and communicating firstly with a tank via an inlet orifice (10a) provided with an inlet valve, and secondly with the outsi...	04/18/2006
6978916	Metering valve for aerosol container A metering valve assembly comprising a ferrule and a valve housing defining an internal cavity. The valve housing accommodates an annular flange and a compression spring therein with a valve gasket closing the internal cavity. The valve housing is attached to the fe...	12/27/2005
6926175	Constant discharge structure for nozzle head lowering type vacuum cosmetic container Disclosed is a constant discharge structure for a nozzle head lowering type vacuum cosmetics container for containing high functional cosmetics. The constant discharge structure includes a liquid collecting chamber having a liquid inflow hole in the lower portion of...	08/09/2005
6923348	Pump with pneumatic motor A pump having a compressed-air-operated reciprocating motor for reciprocating a pump plunger through forward and return strokes. The motor comprises a motor cylinder and a motor piston operable in the cylinder and itself acting as a valve for effecting its return th...	08/02/2005
6474957	Piston type compressor having arcuately shaped fluid port A suction port as a fluid port of a piston type compressor is contoured with reference to a middle line passing through a middle point of a maximum length of the suction port in the longitudinal direction of the suction valve and perpendicularly crossing ...	11/05/2002
6328057	Air valve connection head of hand-held air pump An air valve connection head is compatible with a variety of air pumps and is formed of a first housing member and a second housing member. The first housing member is provided at one end thereof with an insertion hole in which the second housing member i...	12/11/2001
5927957	Plunger device and method of making and using the same thereof New plunger having a cylindrical hollow body 20 or 20B, a handle 30, 30A, or 30B, an outlet hose 40, an outlet tip 42, and a valve or flap 50, 60, or 70 that is able to control the air flow within the hollow 25 of the cylindrical body 20 or 20B. Valve or ...	07/27/1999
5326237	High volume pump with valve tube A pump for moving a fluid includes an outer chamber having a first end wall portion containing a fluid entrance port and a second end wall portion containing a fluid exit port, a valve tube slidably contained within the chamber and having a first edge wit...	07/05/1994
5285932	Apparatus for delivering fluids in proportional quantities An apparatus for mixing two fluids in precise proportions which includes a quantifying meter and a concentrate meter. The apparatus also includes apparatus connecting the quantifying meter and the concentrate meter to simultaneously operate the quantifyin...	02/15/1994
5188519	Saturated fluid pumping apparatus A reciprocating pump which substantially eliminates cavitation problems without imposing capacity and flow limitations to maintain a net positive suction head. The pump comprises a cylinder having a liquid inlet and a liquid outlet, a piston reciprocably ...	02/23/1993
5184943	Rolling diaphragm injection pump An additive injection pump has a rolling diaphragm mounted between a reciprocable assembly and a cylinder to create a secondary fluid pumping chamber in the lower end of the cylinder. The reciprocable assembly has an internal one-way flow passage between ...	02/09/1993
5165876	Tire pump A tire pump comprises a first cylindrical body, a second cylindrical body, a two-way air admission piston, a piston rod, a first one-way valve, a hand grip, a second one-way valve, a third one-way valve, a fourth one-way valve, and an air valve connection...	11/24/1992
5147188	Priming piston pump piston check valve A reciprocating priming piston pump is provided with a piston check valve which provides improved performance by minimizing the pressure drop there through. A dog-bone shaped seat is slideably located inside a piston which in turn slides inside the cylind...	09/15/1992
5139398	Neutralizer valve for a downhole pump A neutralizer valve that is for use in conjunction with one or more reciprocating pumps of a tubing string that is operated in an oil well for recovery of crude oil. The neutralizer valve takes the place of a regular traveling valve in a rod pump, which i...	08/18/1992
5067882	Dual-acting, reciprocating piston pump A dual-acting, reciprocating piston pump is provided which comprises a pump body formed with a passageway having an inlet and a discharge outlet which receives a piston assembly including a plunger rod carrying a valve plate or spider, a shovel rod carryi...	11/26/1991
5058779	Positive displacement piston metering pump A pneumatically operated metering pump having in a single cylinder, a driven piston and a slave piston that operates as a sliding valve for admitting fluid into the pump and drawing it into the cylinder between the two pistons so the next downward stroke ...	10/22/1991
4978283	Primer valve for chop-check pump A chop-check pump for viscous material having cylinder means defining an axis, a drive rod axially movable within the cylinder means, a primer valve attached at one end of the drive rod and movable with the drive rod, and a floating check valve mechanism ...	12/18/1990
4975028	Pump apparatus for evacuating containers Apparatus for evacuating a rigid container using a two-stroke reciprocating-piston pump having an air evacuating vacuum cup which is to be applied to the container lid. The pump cylinder houses a reciprocating piston-check-valve. An adhesive-tape check va...	12/04/1990
4892468	Hydraulic pump A hydraulic pump is disclosed, characterized in that, in the hydraulic pump including a cylinder body having a cylinder chamber, a suction port and an ejection port, a cam member and a reciprocatingly movable member are provided, wherein oil in said cylin...	01/09/1990
4889250	Vacuum pump and closure assembly for beverage container A hand-operated vacuum pump is combined with a resilient closure sleeve for sealing and de-pressurizing the open space within a fermented beverage container. A pump cylinder is covered by a resilient closure sleeve which is insertable into the neck of the...	12/26/1989
4862696	Apparatus for dosage of a condensed gas An apparatus for a dosage of minor amounts of condensed gas includes a container (2) connected to a source of liquid gas by an inlet conduit (5). The container is thermally insulated (3) and disposed in a surrounding jacket (6). Apparatus includes a devic...	09/05/1989
4813485	Gas and oil well pumping or swabbing device and method The pumping or swabbing device and apparatus of the invention utilizes an elongate barrel slidable upwardly and downwardly on an axial rod which carries a valve element for closing on a valve seat provided interiorly of the barrel to close passage through...	03/21/1989
4792289	Reciprocating pump for cryogenic fluids In a reciprocating pump for cryogenic fluids comprising a pump cylinder in which a piston is oscillatingly displaceable in a sealed state, an inlet valve and an outlet valve, and an annular channel surrounding the pump cylinder on the outer side and formi...	12/20/1988
4784578	Metering device The metering device for a liquid medium comprises a cylinder and a piston operatively disposed therein to define a metering chamber ahead of the piston. The outlet end of the cylinder is open and closed by check valve means. The piston is driven forwardly...	11/15/1988
4784584	Metering device The metering device for a liquid medium comprises a cylinder and a piston operatively disposed therein to define a metering chamber ahead of the piston. The outlet end of the cylinder is open and closed by check valve means. The piston is driven forwardly...	11/15/1988
4735048	Hydraulic tool The hydraulic tool of this invention includes a pressure chamber into which a fluid is pumped. A pump chamber has an inlet port and outlet port at opposite ends thereof and a pump plunger extends into the chamber with an annular space around it. An annula...	04/05/1988
4673000	Check valve assembly An O-ring is received in a groove having only an arcuate portion thereof operative to act as a check valve, with the arcuate portion being movable into a chordal recess so that it does not provide full circumferential sealing engagement in the area of the...	06/16/1987
4607765	Manually operated pump for the delivery under pressure of liquid substances A manually operated pump for the delivery under pressure in micronized form of liquid and/or thick substances or materials stored in a container on which the pump is mounted. The pump comprises a main hollow body, a movable hollow stem supporting a micron...	08/26/1986
4599054	Travelling valve assembly for a fluid pump A travelling valve assembly for use in a sucker rod actuated fluid pump includes a ball valve actuator which engages the ball valve during the downstroke of the sucker rod to force the ball valve into an open fluid transmitting relationship with respect t...	07/08/1986
4552515	Handy tube pump A tube pump for use in pumping a liquid from one place, such as a tank, to another, such as a vessel, the tube pump comprising a first tube for sucking a liquid from a tank; a second tube for allowing the sucked liquid to discharge therethrough; a connect...	11/12/1985
4534715	Traveling valve assembly A traveling valve assembly is provided for use in subsurface gravity type pumping systems and is responsive to reciprocating motion to manipulate a rotary valve head relative to a valve seat between open and closed positions, and to fluid pressure to mani...	08/13/1985
4531896	Fluid pump A fluid pump for raising petroleum fluids through production tubing in completed oil wells includes a mechanically actuated travelling valve, which is rotated via longitudinal movement within the housing of a travelling valve actuator member....	07/30/1985
4518328	Piston for piston pump In a piston for a piston pump including a stopper and a flange fittedly mounted on one end of the piston rod effecting a reciprocating strokes within a cylinder, a reinforcing ring member is fitted between a suction side of a piston packing and a piston m...	05/21/1985
4436494	Plunger pump A plunger pump wherein a bellows is provided between the plunger and the plunger case to thereby protect a slide surface of the plunger from a pressure-fed fluid such as inorganic paint, zinc rich paint. In this plunger pump, the pressure-fed fluid is allowed ...	03/13/1984
4435135	Pump assembly with improved seal A hand-actuatable pump assembly is adapted to be sealingly secured to the mouth of a container for dispensing material in the container. The pump assembly includes a generally tubular adapter that defines a discharge passageway. A spray member is seated o...	03/06/1984

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Class 417/511 - Piston carried distributor, one frictionally engages chamber wall, drive rod integral with other (e.g., piston driven by valve element through lost motion connection, etc.)