Class 417/507 - Distributor moved by separate fluid responsive surface

Subclass of Class 417 - Pumps
Definition: Apparatus in which the means to control the flow of fluid
No. of patents: 50
Last issue date: 09/23/2008

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Number	Title	Issue Date
7427190	Hydraulic device for pumping molten metal and/or controlling a molten metal flow A hydraulic device for pumping molten metal and/or controlling its flow, comprising an enclosure that forms internally a cylindrical chamber, for the connection of at least one first duct and one second duct for the passage of molten metal, within which a piston can...	09/23/2008
7188731	Variable flexure-based fluid filter An apparatus and method for filtering particles from a fluid comprises a fluid inlet, a fluid outlet, a variable size passage between the fluid inlet and the fluid outlet, and means for adjusting the size of the variable size passage for filtering the particles from...	03/13/2007
6948320	Expansion turbine stage An expansion turbine stage for compressed gases has a housing and a turbine rotor. The housing has flow guide channels for feeding the compressed gas to the turbine rotor. The turbine rotor, which is over-mounted and has centripetal flow through it, is followed by a...	09/27/2005
6848893	Compressor check valve A compressor check valve having a valve bolt and a valve bolt cover for noise reduction and mitigation of impact from a valve bolt on the valve bolt cover. A bolt insertion hole is provided in the cover to receive the valve bolt. A pressure conduction hole penetrati...	02/01/2005
6814553	Dual reciprocating bellows pump, with a pair of interlocking shafts passing through a common pump head and dual pump chambers The present invention is to provide a dual reciprocating bellows pump which can facilitate size reduction design of the whole pump, permit pump manufacture at low cost, and permit reducing the dead spaces in pumping chambers to provide improved self-suction performa...	11/09/2004
6629820	Microfluidic flow control device A method of controlling fluid flow in a channel in a microfluidic flow control device by introducing fluid to the channel, with the fluid flowing in a flow direction and controllably deforming material defining the channel in a direction perpendicular to ...	10/07/2003
6585499	Fluid delivery mechanism having a flush-back operation The present invention provides an infusion pump 10 for providing a flow of a liquid through an tube 28. The infusion pump 10 includes at least two occluders 152, 162 having an open position and a closed position for releasably pinching-off the tube 28. A ...	07/01/2003
6499974	Piston 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
6318977	Reciprocating compressor with auxiliary port A reciprocating compressor that includes an auxiliary port 38 in series with a check valve 40 to move fluid at an intermediate pressure that is between the main suction and discharge pressures. Piston 31 normally covers the auxiliary port during a portion...	11/20/2001
6164930	Apparatus for regulating flow of a pumped substance An apparatus and method for pressure processing a pumpable substance. In one embodiment, the apparatus includes a pressure vessel having an inlet port to receive the pumpable substance and an outlet port to remove the pumpable substance. The inlet and out...	12/26/2000
5992452	Ball and seat valve assembly and downhole pump utilizing the valve assembly Disclosed is a system used to increase the wear life of ball and seat valves and of ball and seat valves utilizing a piston mechanism to unseat the ball from the seat, which during operation, create turbulent flow within the valve preventing sand and othe...	11/30/1999
5902094	Flow control valve for a pressure washer A pressure washer is powered by a prime mover, e.g., an electric motor or an internal combustion engine, and has a flow control valve. The valve has a housing containing a piston assembly and the assembly has a mechanism coupled to it for controlling prim...	05/11/1999
5893708	Rotating piston for ball and seat valve assembly and downhole pump utilizing said valve assembly Disclosed is an assembly for unseating a seated traveling valve ball, and pumps utilizing such an assembly. The assembly generally includes a tubular member having therein a piston with an actuator for engaging the ball. Mechanical advantage is provided e...	04/13/1999
5628624	Pump barrel valve assembly including seal/actuator element Disclosed is an assembly for unseating a seated traveling valve ball, and pumps utilizing such an assembly. The assembly generally includes a tubular member having therein a piston with an actuator for engaging the ball. Mechanical advantage is provided e...	05/13/1997
5611675	Swash plate compressor with start up flow restrictive inlet spool valve A spool 9 is connected to the rotating shaft 1 so that the spool 9 is slidable with respect to the shaft 1, while the rotating movement of the shaft 1 is transmitted to the spool 9. The spool 9 is formed with a first recess 9-3 of a reduced circumferentia...	03/18/1997
5571002	Plunger pump system with shuttle valve A plunger pump system including a plunger pump, and a shuttle valve connected to the plunger pump having a valve body reciprocally fitted in a hollow portion formed in a valve casing to divide the hollow portion into a liquid supply side chamber and a liq...	11/05/1996
5533876	Pump barrel seal assembly including seal/actuator element Disclosed is an assembly for unseating a seated traveling valve ball, and pumps utilizing such an assembly. The assembly generally includes a tubular member having therein a piston with an actuator for engaging the ball. Mechanical advantage is provided e...	07/09/1996
5527164	Positive-displacement pump with inlet float chamber A fluid valve device for on-off control of fluid flow through a passage extending between two fluid ports (12, 15) and including a valve seat (17A) comprises a hollow valve member (21) which is movable into and out of sealing engagement with the valve sea...	06/18/1996
5454698	Plunger pump system with shuttle valve A plunger pump system including a plunger pump, and a shuttle valve connected to the plunger pump having a valve body reciprocally fitted in a hollow portion formed in a valve casing to divide the hollow portion into a liquid supply side chamber and a liq...	10/03/1995
5419689	Vacuum pump having oil-actuated inlet valve A vacuum pump which includes an oil pump for raising the pressure of oil in the vacuum pump during operation of the vacuum pump and an inlet valve for isolating the vacuum pump inlet during non-operation of the vacuum pump. The vacuum pump has an operatin...	05/30/1995
5252037	Piston valved vertical pump for particulate materials A piston pump for conveying fragile particulate food products without damaging the product. The pump includes a filler and a discharge conduit containing piston valves actuated by hydraulic cylinders. The pumping chamber in which the product is compressed...	10/12/1993
5222872	Control system for piston pumps A double piston pump mechanism includes two pistons operated out-of-phase by respective fluid-actuated cylinders. The pistons suck-in fluid through suction valves and discharge pressurized fluid through pressure valves. The actuation of the cylinders is r...	06/29/1993
5181835	Hydraulic pump A hydraulic pump having a pump body formed by stacked plates mounted end-to-end. First and second ports for delivery and return of hydraulic fluid are formed through a port plate that is surmounted by a valve plate through which first and second main valv...	01/26/1993
5061156	Bellows-type dispensing pump A microprocessor controlled bellows-type pump system for the precise and accurate pumping and dispensing of fluids. The pump comprises a longitudinally contracting bellows which is supported from warping under fluid pressure by a support bushing in contac...	10/29/1991
5027605	Oil injection system for air conditioning equipment An apparatus for dispensing a measured amount of hydroscopic lubricant into an air conditioning system. The apparatus includes a container for the lubricant which has a key type coupling to a cylinder. The cylinder has a piston which may reciprocate there...	07/02/1991
5011376	Valve control system for an air displacement type pump A valve control system for an air displacement type pump operates the inlet or outlet valve in accordance with the pressure differential between the inlet line and the main pump chamber or the outlet line and the main pump chamber respectively such that t...	04/30/1991
4744735	Parallel-cylinder, angled-valve fluid pump A dual cylinder hydraulically operated pump for viscous materials is described. The pump comprises a pair of pistons reciprocable in parallel cylinders opening into a common inlet and outlet housing in which the outlet valve seats are angled with respect ...	05/17/1988
4740796	Bubble jet recording method and apparatus in which a heating element generates bubbles in multiple liquid flow paths to project droplets Liquid droplets are formed by instantaneous state change by thermal energy of a liquid filled in a thermal chamber, said droplets being deposited onto a recording member to achieve recording....	04/26/1988
4737084	High-pressure plunger pump A high-pressure plunger pump which is designed for maximum pressures in the range between 1,000 and 4,000 bars includes a pump housing centered on an axis and including a main body having two axially spaced ends, and a pump head mounted on one of the ends...	04/12/1988
4715795	Metering pump In order to enable a conveying from a vacuum into a vacuum when metering liquid components of reaction resin compounds, a metering pump comprising a reciprocating displacement member is employed wherein the intake valve and the discharge valve are fashion...	12/29/1987
4691735	Plunger valve apparatus for oil well pump A traveling valve or a standing valve for an oil well lift pump 10 includes a piston 36 which lifts a ball 50 above the valve seat 48 to open the valve and sets the ball 50 back onto the seat 48 to close the valve. The ball 50 is contained within a ball p...	09/08/1987
4460152	Hand pump with automatic lock-out In a system for opening and closing a main line valve by use of high pressure hydraulic fluid which is controlled from a remote location and in which the fluid passes through a hand pump located at the site of the valve, a protective lock-out system is pr...	07/17/1984
4453892	Submergible pump installations A pump discharge assembly for a submergible pump installation, for use in an oil well and the like, has inlet ports for receiving liquid from a pump discharge, which ports are regulated by a back-pressure compensating valve. The valve obturates the ports ...	06/12/1984
4437817	Two cylinder viscous material pump A two-cylinder viscous material pump has parallel axis, conveying cylinders mounted in a frame work. The conveying cylinders alternately suck in the viscous material through an inlet valve housing from a reservoir and press it out, in the following stroke...	03/20/1984
4424012	In-line fluid pump and shuttle valve therefor An annular piston is received within a suitably dimensioned cylinder and reciprocally driven to pump fluid on both piston strokes to a fluid carrying line with which the pump is arranged in an in-line relationship. A centrally located shuttle-valve altern...	01/03/1984
4345881	Close-off valve for suction pipes in hydraulic pumps A close-off valve for suction pipes to establish communication between a source of pressure and a consumer of pressure, such as a hydraulic pump. The valve makes it possible to disconnect the consumer in a simple and reliable manner, that is without leaka...	08/24/1982
4339233	Power-assisted valve A power-assisted valve is provided which is particularly effective for systems handling viscous materials, such as certain metering systems. The check valve operates effectively even with highly-filled viscous resins used in such systems. The valve includ...	07/13/1982
4326839	Cylinder unloading mechanism for refrigeration compressor A cylinder unloading mechanism for a multi-cylinder compressor including a block having a plurality of cylinders. Each cylinder is closed by a valve plate having suction and discharge ports communicating with the cylinder and respectively having spring-bi...	04/27/1982
4322201	IV Pump with back pressure control A volumetric infusion pump of the type having a rolling diaphragm pumping chamber includes a back pressure sensor between the rolling diaphragm pumping chamber and the pump outlet for sensing back pressure. A valve is positioned between the back pressure ...	03/30/1982
4105373	Fluid distributor device for controlling an apparatus for pumping wet concrete and the like A concrete pumping unit comprising a pair of parallel piston pumps, alternately placed in communication with a concrete supply conduit and with a concrete delivery pipe, through a single baffle blade valve and respectively driven by coaxial fluid pressure...	08/08/1978

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Class 417/507 - Distributor moved by separate fluid responsive surface