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Class 251/318 - RECIPROCATING VALVE


Subclass of Class 251 - Valves and valve actuation
Definition: Subject matter wherein the valve has a linear motion to
No. of patents: 84
Last issue date: 12/09/2008


1      
NumberTitleIssue Date
7461829Valve for controlling slurry flow
The invention relates to a seal to be used as a valve stem seal in a valve for controlling flows containing solid material such as slurry flows with an actuator. The seal is positioned outside of the valve body so that the inside of the seal and the valve body form ...
12/09/2008
7341097Coolant sensor and bleed valve
A coolant sensor doubles as a bleed valve for purging trapped air from a cooling system. The sensor slides into a port placing a sensor element in contact with the coolant. The sensor includes a pair of encircling o-rings for sealing the system from atmosphere in on...
03/11/2008
7320336Plug incorporating pressure-sensitive valve
A plug which is insertable into a outlet from a vessel, to seal the vessel so that it may hold liquid. To prevent overflow, the plug has an in-built valve which automatically opens when it experiences a predetermined threshold pressure. The threshold pressure can be...
01/22/2008
7319638Hydraulic oscillator for use in a transmitter valve
An oscillating valve driven by the pressure in a mud pulser develops a pressure variation in the mud pulse signal that is at a frequency that is different than the frequencies of the mud system. The oscillating valve is coupled to or integral with the pulse drive cy...
01/15/2008
7300034Thermal compensatory valve
A compensation device for a valve compensates for expansion of a valve stem and/or inertial effects during operation of the valve. The compensation device is preferably integrally provided with the valve. The compensation device includes a first plate rigidly connec...
11/27/2007
7278464Control pin
A control pin for controlling the flow of liquid metal in a casting process includes an elongate body member, the body member being made at least partially of a composite ceramic material that includes a fibrous reinforcing material embedded within a ceramic matrix,...
10/09/2007
7255329Gate valve with offset valve stem
An improved gate valve has a main body defining a flow passage, and a cylindrical gate member, which has a continuous seal disposed within a groove in the gate surface. The gate is actuated by a valve stem movable through a bonnet connected to the main body, with th...
08/14/2007
7231932Apparatus and methods for servicing a hydraulic choke
An embodiment of the invention involves a method for servicing a choke valve that includes disconnecting a choke actuator and at least one internal valve component engaged therewith from the choke valve body of the choke valve and moving the same in a generally line...
06/19/2007
7225833Fluid connector with adjustable flow control
A fluid connector with adjustable flow control includes an adapter having a first threaded portion, a sealing surface and an orifice. The fluid connector also includes a valve body having a second threaded portion for engagement with the first threaded portion and a...
06/05/2007
7222837Valve body with integral seal retention groove
A valve body having at least one internal hollow or space comprises two separately formed portions joined by at least one cylindrical web. Internal space may communicate with space outside the valve body via a fluid passage, and internal space may be filled with a s...
05/29/2007
7204668Panel fastener with spring retaining ring
A fastener assembly having a bolt having a shaft and a nose portion at its terminal end. A ring is mounted on the bolt. The ring is an elongated piece of resilient material curving from a first end about the bolt shaft, then curving back around to a second end adjac...
04/17/2007
7188477High temperature dynamic seal for scramjet variable geometry
A seal assembly for use in an engine, such as a scramjet engine, having a movable element, such as inlet cowl flap, is provided. The movable element has an outboard structural member which requires thermal protection. The seal assembly includes a sealing element and...
03/13/2007
7174912Shut-off valve assembly
A shut-off valve assembly for regulating the flow of fluid through or from a fluid line. The assembly comprises: a body attachable to or within a fluid line and having a chamber therein with inlets and an outlet for fluid from the fluid line; a valve seat that provi...
02/13/2007
7172175Suction valve
A suction valve including a valve seat and a piston movably joined to the valve seat. The piston has a head for engaging the top surface of the valve seat and a stem extending downwardly from the head through the valve seat. A valve guide is positioned adjacent the ...
02/06/2007
7168450Valve adapter
An adaptive fitting for valves. The adaptive fitting has a fitting body having a first end and a second end. The fitting body defines an inner passageway extending from the first end of the fitting to the second end. The fitting is provided with a valve-engaging por...
01/30/2007
7165757Control pin
A control pin (12) for controlling the flow of liquid metal in a casting process includes an elongate body member (34), the body member being made at least partially of a composite ceramic material that includes a fibrous reinforcing material embedded ...
01/23/2007
7159604Manipulator system for servicing a hydraulic choke
The present invention relates to an apparatus for use in field servicing a choke valve system. The apparatus is used for lifting, manipulating, and handling the heavy components of hydraulic choke valves. The apparatus includes an elongated track, a choke valve supp...
01/09/2007
7077384Integrated post-guided seat ring assembly
A control valve having a seat ring assembly constructed from a unitary piece of material is disclosed. The seat ring assembly may include a base which serves as a valve seat for the valve plug of the valve, and which includes a plurality of exterior threads adapted ...
07/18/2006
7073771Porous valve assembly
A valve assembly for controlling the flow of a predetermined fluid, including a tube having an open end forming an outlet port, and wherein the tube is made of a material that is porous with respect to the predetermined fluid, an outer wall forming a fluid chamber c...
07/11/2006
7069741Economizer chamber for minimizing pressure pulsations
A baffle for use in a refrigerator apparatus comprises a baffle plate comprising a first and a second opposing sides attached to an inner surface of the refrigerator apparatus, a baffle seal plate attached along a third side of the baffle plate, the baffle plate sea...
07/04/2006
7051995Device for generating a reciprocating movement, valve arrangement therefore and pheumatic tool
A pressure-fluid driven device for generating a reciprocating movement includes a first (5) and a second relatively movable part (3), wherein a working chamber (7) is intended to be alternatively pressurised and depressurised so as to drive the ...
05/30/2006
7033256Abrasive fluid jet machining apparatus
A valve for controlling a flow of abrasive particles suspended in a pressurized carrier fluid has at least two apertured valve seats (74, 75) in face to face contact. One of the valve seats (74, 75) may be slid between a first position in which the ape...
04/25/2006
7011117Filling valve
An improved filling valve and liquid filling machine comprising such valve are herein disclosed. The filling valve comprises a housing having a base, a cap and a sidewall extending between the base and the cap thereby defining a chamber. The base has a ramp which sl...
03/14/2006
7004186Surge relief apparatus for a valve
A valve apparatus that includes surge relief includes a valve housing having an inlet port, an outlet port, and a poppet seat between the inlet port and the outlet port. The valve also includes a first moveable poppet piece having a closed position against the poppe...
02/28/2006
6955339Valve body with integral seal retention groove
A valve body has one or more integral seal retention grooves and one or more interior hollows which may be manufactured using frictional or other types of welding to join two previously formed portions through at least one cylindrical web. Forging or casting valve b...
10/18/2005
6902704Injection pump assembly for a combinatorial reactor and related method
An injection pump assembly 10 in a chemical delivery system for simultaneously delivering reagents into a combinatorial reactor system having multiple injectors. The assembly 10 has a plurality of injectors 12, each injector 12 being in f...
06/07/2005
6875198Surgical suction regulator valve
A suction regulator valve adapted to be installed between a suction pump or other vacuum source and a suction tube or catheter, the valve comprising a hollow valve body having an outer surface with a generally transverse or circumferential opening therethrough, and ...
04/05/2005
6866244Bushing-less control valve
A fluid control valve, in which the usual metal stem guide bushings have been eliminated, includes a valve bonnet and a packing nut threadably engaging the valve bonnet. A valve stem passes through the valve bonnet and the packing nut in a clearance fit so that ther...
03/15/2005
6854712Capillary valve that can be pulsed
In a capillary valve, which can be pulsed and which includes a capillary with a constriction forming a nozzle, a plunger is movably disposed in the capillary and forms, together with the capillary constriction, a seal, and a drive is provided for actuating the plung...
02/15/2005
6843859Dump door
A compliant door assembly for use in sealing an opening in a vessel bottom includes a door having a sealing wall, the sealing wall having a contact face moveable into contact with a wall surrounding the vessel bottom. A reinforcing member is moveable into contact wi...
01/18/2005
6817594Grooved valve seat with inlay
A valve seat includes a seat body with an inlay and at least one groove. The seat body has a passage which extends from a first opening to a second opening in the seat body. A channel is located in the seat body adjacent the first opening and extends around at least...
11/16/2004
6789779Magnet valve, in particular for a traction-controlled hydraulic vehicle brake system
A hydraulic part of a magnet valve is received in a bore of a valve block. The hydraulic part is secured to the valve block with a calked heel of a securing bush that is slipped onto a guide sleeve of the hydraulic part. The securing bush rests on an annular shoulde...
09/14/2004
6772992Memory cell structure integrated on semiconductor
This invention relates to a memory cell which comprises a capacitor having a first electrode and a second electrode separated by a dielectric layer. Such dielectric layer comprises a layer of a semi-insulating material which is fully enveloped by an insulating mater...
08/10/2004
6725861Valve for underwater aqualung supplying devices
A valve for underwater aqualung supplying devices, including a pressure chamber and a watertight compensation chamber adjacent and watertightly separated by a partition wall. A shutter including a tubular stem inserted, at least in part, inside each chamber. The pre...
04/27/2004
6708725Valve, particularly solenoid valve
The invention concerns a valve, particularly a solenoid valve, with an inlet connection and an outlet connection, having between them a shut-off device with a valve seat and a closure member. In such a valve, it is endeavoured to obtain a small output with a simple ...
03/23/2004
6679477Valve body with integral seal retention groove
A valve body having one or more integral seal retention grooves and one or more interior hollows which may be manufactured using frictional or other types of welding to join two previously formed portions through at least one cylindrical web. Forging or c...
01/20/2004
6666433Grooved valve seat with inlay
A valve seat includes a seat body with an inlay and at least one groove. The seat body has a passage which extends from a first opening to a second opening in the seat body. A channel is located in the seat body adjacent the first opening and extends arou...
12/23/2003
6638481Plug flow cytometry for high throughput screening and drug discovery
An apparatus for drawing and supplying multiple samples for rapid processing in flow cytometry. The apparatus comprises a reciprocating valve and at least one syringe. The invention is also a method for rapidly processing multiple samples in flow cytometr...
10/28/2003
6435475Valve body with integral seal retention groove
A valve body having one or more integral seal retention grooves and one or more interior hollows which may be manufactured using frictional or other types of welding to join two previously formed portions through at least one cylindrical web. Forging or c...
08/20/2002
6382587Fluid control valve
A fluid control valve comprising a valve housing in which there is a reciprocating shaft on which is mounted a valve body that is brought into and out of contact with respect to a valve seat disposed within a fluid flow passage to permit or prevent fluid ...
05/07/2002
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