Class 137/533.17 - Guided head

Subclass of Class 137 - Fluid handling
Definition: Devices in which means are provided to guide the head to
No. of patents: 63
Last issue date: 10/07/2008

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Number	Title	Issue Date
7431048	Backflow preventer A backflow preventer (1) is provided that, in an insertable housing (2) thereof, includes a valve member (6) located in a housing interior (5). The valve member (6) sealingly rests against a valve seat (7) in the closed posi...	10/07/2008
7422030	Air admittance valve assembly A one directional flow valve assembly for a fluid system. The valve assembly is comprised of a valve body having an internal valve chamber in communication with the ambient environment and a valve seat arrangement. The assembly further has a cap structure with means...	09/09/2008
7108494	Apparatus for preventing the backflow of gas of scroll compressor An apparatus for preventing backflow of a gas of a scroll compressor includes: a hermetic container provided with a discharge pipe through which a gas is discharged; a fixed scroll fixedly coupled in the hermetic container; an orbiting scroll orbiting in meshing eng...	09/19/2006
7104775	Injection unit having rotatable device for preventing reverse flow Disclosed is an injection unit having a rotatable device for preventing reverse flow. To connect first flow channels formed in a spacer and second flow channels formed in a screw head when the metering is performed, and prevent reverse flow of resin by cutting off t...	09/12/2006
7104470	Device for producing high pressure in a fluid in miniature A miniaturized device for pressurizing fluid. The device includes a hollow piston that provides a fluid path and a valve member. The valve member is configured for axial movement so that the valve axis remains parallel to the piston axis. The valve member is arrange...	09/12/2006
7028709	One-way valve with poppet member The valve includes a supply portion, a delivery portion and an intermediate fluid chamber; a poppet member is positioned within the fluid chamber and is adapted to move within the chamber, the poppet including a conical seating surface and a rim portion, the rim por...	04/18/2006
7000580	Control valves with integrated check valves A spool valve for variable cam timing phaser comprising a spool, a plurality of check valves and passages from the advance chamber and the retard chamber to a port in the spool valve. The spool having at least two lands separated by a central spindle, slidably mount...	02/21/2006
6918547	Device for producing high pressure in a fluid in miniature A miniaturized device for producing high pressure in a fluid imposes stringent requirements on the manufacturing process. The device according to the invention consists of a hollow piston displaceably mounted in a cylinder and a valve member which is guided b...	07/19/2005
6823893	Non-return valve A non-return valve has a valve housing with a flow channel having a vertical channel section, an inlet aperture, an outlet aperture and a blocking device closing the flow channel. The blocking device comprises a valve seat surrounding the outlet aperture and a valve...	11/30/2004
6769446	Freeze protection device for wall hydrants/faucets A freezeless wall hydrant has a normally horizontal fluid inlet tube with an interior end and exterior end. A hollow valve fitting is rigidly secured to the interior end of the inlet tube for a connection to a source of pressurized fluid. A valve seat is located on ...	08/03/2004
6726124	Device for producing high pressure in a fluid in miniature A miniaturized device for pressurizing fluid. The device includes a hollow piston that provides a fluid path and a valve member. The valve member is configured for axial movement so that the valve axis remains parallel to the piston axis. The valve member is arrange...	04/27/2004
6668856	Valve with guided ball A guided ball check valve in which the ball is guided to prevent radial wander. The guided ball valve comprises a valve housing having a cylindrical bore. A conical valve seat is provided at a first end of the cylindrical bore. Axial grooves are formed in...	12/30/2003
6517011	Fuel injector with pressurized fuel reverse flow check valve A fuel injector pressurizes fuel in a pressurization chamber and ejects the fuel from an orifice. A reverse flow check valve allows fluid communication between the pressurization chamber and the orifice during fuel injection, but blocks fluid communicatio...	02/11/2003
6402055	Device for producing high pressure in a fluid in miniature A miniaturized device for pressurizing fluid. The device includes a hollow piston that provides a fluid path and a valve member. The valve member is configured for axial movement so that the valve axis remains parallel to the piston axis. The valve member...	06/11/2002
6360766	Check valve with an integral breakaway retainer A check valve plunger assembly for use in a fluid channel is provided. The check valve plunger assembly includes a check valve plunger having a first end, a second end, and a body portion. The body portion extends between the first and second end of the c...	03/26/2002
6227830	Check valve mounted adjacent scroll compressor outlet Several discharge check valve arrangements for scroll compressors move the check valve closer to the discharge port and the compression chambers. This reduces the amount of discharge pressure backflow, and thus reduces the amount of reverse rotation at sh...	05/08/2001
6065948	Discharge check valve in a scroll compressor A scroll compressor has a discharge check valve assembly comprised of a valve and a valve cage. The valve is maintained open within the assembly by the flow of discharge gas from the scroll set during the normal course of compressor operation and is essen...	05/23/2000
5992442	Relief valve for use with hermetically sealed flexible container A pressure relief valve for use with flexible containers holding coffee, especially ground coffee, is disclosed. The valve incorporates a unique two piece structural arrangement that requires a low level of precision compared to similar valves. The valve ...	11/30/1999
5897305	Valve assembly for compressors A valve assembly positionable between open and closed positions in response to pressure differentials only comprising a valve chamber having an inlet and an outlet defined by a circumferentially extending tapered wall defining a valve seat adjacent the in...	04/27/1999
5894741	Universal housing body for an expansion device having a movable orifice piston for metering refrigerant flow A universal housing body for a refrigeration expansion device including a movable orifice piston. The body is adapted for interchangeable use with a piston of a first variety having a radial boss portion extending along a first axial distance, L1	04/20/1999
5836170	Vacuum release valve tube assembly A vacuum release valve for use in a refrigerated compartment such as a domestic refrigerator which allows a small amount of outside air to enter the refrigerated compartment to prevent a vacuum from forming in the refrigerated compartment caused by warm a...	11/17/1998
5797427	Fuel injector check valve A diesel engine unit injector is combined with a check valve having fuel delivery passages (notches or slots) with radially-inner edges that are concave in shape whereby areas of relatively high-velocity interfacial flow between the check valve disc and t...	08/25/1998
5788289	One-piece coupler for connecting hoses A hose-coupler made up of a just one component having a main housing section with a female end and a male end. The second female end of the coupler is formed with interior threads, for receiving therein a portion of the male end of the second hose. The ma...	08/04/1998
5709242	Device for blocking a liquid flow through a pipe in one direction A device for blocking a liquid flow through a pipe in one direction, said device being provided with a substantially spherical valve body, which can closingly cooperate with a substantially annular valve seat, which is positioned substantially transversel...	01/20/1998
5701931	Water relief valve for a drainage system A water relief valve for a drainage system includes a hollow cylinder body and a poppet valve which is inserted into the top of the cylinder body. The pair is connected to the top of a buried pipe section and is flush with the ground after installation. T...	12/30/1997
5683236	Anti-reverse rotation valve for scroll compressor A scroll-type refrigeration compressor has a gas-liquid mixture discharge passage extending through the driver scroll drive shaft for discharging refrigerant gas and entrained lubricant into a high pressure chamber in the compressor housing. An anti-rever...	11/04/1997
5520522	Valve arrangement for a micro pump A micro pump which employs magnetostrictive or electrostrictive elements as solid drive elements and is capable of self-priming even though its flow rate is increased. In the pump, disk-shaped valve elements respectively having tapered protrusions on one ...	05/28/1996
5365906	Fluid flow check valve for fuel system A fluid flow check valve assembly having a tubular valve housing with opposite inlet and outlet end portions and a movable valve member therebetween. The valve member has an end sealing portion engageable with an inlet seating portion of the housing and a...	11/22/1994
5199860	Hydraulic reciprocating piston pump for brake installations of motor vehicles with an ABS system An improve the pump including a reciprocal piston pump having a pump piston, guided longitudinally displaceable in a displacement chamber. An outlet valve for the admission of pressure means and a valve for the outflow of pressure means is associated with...	04/06/1993
5161574	Maximum operation angle single plug and puppet type retention valves A check valve assembly is disclosed wherein a valve closure means includes a guide means and a connector means as a composite member for use in a pipline or conduit inclined to the vertical. The mass of the composite member relative to the angle of inclin...	11/10/1992
5141420	Scroll compressor discharge valve A scroll type hermetic compressor is disclosed which incorporates an improved disc type check valve in the discharge conduit exiting from the compressor shell. The check valve operates to prevent return of high pressure refrigerant which may cause reverse...	08/25/1992
5100299	Process for pumping a two phase mixture A single plug check valve for use in a process for pumping a two phase mixture is designed in such a manner as to minimize pressure drop across the valve thereby maximizing the flow of fluid through the valve body....	03/31/1992
5097864	Adjustable flow poppet valve for injection molding A check valve for use in controlling the flow of thermoplastic material in an injection molding apparatus includes a valve body having an axially extending chamber formed therein with an inlet opening and an outlet opening through which the material can f...	03/24/1992
5062451	Maximum flow single plug retention valve A single plug check valve for use in a process for pumping a two phase mixture is designed in such a manner as to minimize pressure drop across the valve thereby maximizing the flow of fluid through the valve body....	11/05/1991
5014729	Expansion device for a refrigeration system, piston therefor and methods of making the same An expansion device for a refrigeration system, piston therefor and methods of making the same are provided, the expansion device comprising a housing having opposed ports for coupling the device in the system and being separated from each other by an int...	05/14/1991
4901757	One way valve A one way valve includes a valve housing. A valve compartment is located with the valve housing. An inlet and an outlet port are mounted in the valve housing to provide communication with the valve compartment. The inlet port has an inner cylindrical port...	02/20/1990
4896696	Flow control restrictor A restrictor for use in conduit systems, such as refrigeration and heat pump circuits for controlling the flow of fluid therein. The restrictor incorporates a unique shape to lower the operational noise normally generated by a restrictor without affecting...	01/30/1990
4869290	Expansion device for a refrigeration system, piston therefor and methods of making the same An expansion device for a refrigeration system, piston therefor and methods of making the same are provided, the expansion device comprising a housing having opposed ports for coupling the device in the system and being separated from each other by an int...	09/26/1989
4856823	Coupling with improved locking/unlocking member A female assembly of a quick connect/disconnect coupling including an annular locking/unlocking member molded in a thin wall construction of plastic material such that the annular member is capable of resilient flexure such that a manual movement applied ...	08/15/1989
4836199	Aspirating/ventilating apparatus and method A ventilating and aspirating assembly comprising an aspirating catheter tube internally disposed within and coextensive with a surrounding flexible collapsible sterility preserving film envelope, a connector by which ventilating air is involuntarily deliv...	06/06/1989

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Class 137/533.17 - Guided head