Class 251/83 - Spring

Subclass of Class 251 - Valves and valve actuation
Definition: Devices wherein the movement of the valve is modified by
No. of patents: 72
Last issue date: 03/06/2012

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Number	Title	Issue Date
8128058	Flow control device A flow control device in which a flapper is continuously biased to the closed position by a leaf spring that may have a plurality of fingers. The same valve includes a shutoff mechanism allowing the user to adjust forward flow through the valve or shut it off entire...	03/06/2012
8042788	Valve device for fuel tank A thin disk portion, which extends radially, and a rib provided in an outer circumference part of the disk portion are formed in a valve body. A ring-like seal projection to be pressure-contacted with the disk portion to seal a valve is formed in a case. Because the...	10/25/2011
7775503	Pressure relief valve An oil pressure relief valve for use in the lubrication system of an internal combustion engine is controlled by both pump outlet pressure 3 and pilot pressure 2. The action of the valve reduces the start-up pressure spikes associated with known pilot-...	08/17/2010
7594639	Cylinder valve A cylinder valve includes: a single valve member in the form of a spring loaded shuttle, the spring exerting a pressure on the shuttle in a valve-closing direction; a valve seat against which the valve member bears in its valve-closing posi...	09/29/2009
7410145	Valve for speed filling a dunnage bag A valve to be mounted on a dunnage bag having one collar mounted on the bag, a seal plate positionable adjacent to an interior end of the collar and a stem slideably mounted in the collar to position the seal plate in one position where air is prevented from passing...	08/12/2008
7347405	Inlet valve for pneumatic tool An inlet valve is provided for a pneumatic tool. The pneumatic tool defines a space and a passageway communicated with the space. The inlet valve includes a housing and a plunger. The housing is movable in the space between a first position where it blocks the space...	03/25/2008
7325781	Automatic bathroom flushers with modular design A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou...	02/05/2008
7290561	Pulsation causing valve for a plural piston pump A valve for causing pulsatile flow in a multi-piston plunger pump includes a valve poppet, a valve seat, and a spring biasing the valve poppet against the valve seat; and a mechanism holding the valve poppet in an open position, thereby producing pulsatile flow from...	11/06/2007
7278443	Pulsation causing valve for a plural piston pump A valve for causing pulsatile flow in a multi-piston plunger pump includes a valve poppet, a valve seat, and a spring biasing the valve poppet against the valve seat; and a mechanism holding the valve poppet in an open position, thereby producing pulsatile flow from...	10/09/2007
7249748	Electric motor actuated stop and self-closing check valve An electric motor actuated stop/check valve for industrial use such as liquid pumping systems which has a controlled opening and closing rate when liquid flow is in a forward direction but closes quickly upon reverse flow of liquid with no action from the electric m...	07/31/2007
7219850	Mechanical valve assembly A water spray nozzle assembly includes an internal channel that is sealable by an internal valve having a seat and a disc. A tilting member is operable to tilt the disc at least partially off of the seat, allowing water to flow through the internal channel. The disc...	05/22/2007
7143763	Device for washing nasal cavities and collecting catarrhal matter The invention relates to a device for washing the nasal cavities with a nebulized treatment liquid. It comprises a base body, a atomizer chamber containing a washing liquid, means for nebulizing the liquid in said chamber and dispensing the atomized liquid to the na...	12/05/2006
7134638	Stop valve for gas tank A stop valve for a gas tank is provided which achieves favorable sealing performance by inhibiting rotation of a sealing member attached to a valve element. A passage is formed inside a valve body, and a valve seat is provided in the passage. The valve element which...	11/14/2006
7128089	Flow control providing stable fluid flow An electro-mechanical variable fluid flow restrictor includes a support having a passage and a seal surface, a deformable seal that is engageable with the seal surface, and a bias member for exerting an electronically controlled variable bias against the deformable ...	10/31/2006
7121299	Regulator valve with flow indicator for a hot-water heating system The valve includes an intake duct (13) for conveying water into the valve, an externally projecting tubular body (20) of a transparent with an internal cavity (21) and a flow indicator rod (40), slidable inside the valve, with a lower por...	10/17/2006
7114699	Combination valve and regulation for use with pressurized gas cylinders, particularly oxygen cylinders A valve apparatus, and combined valve-regulator apparatus, for safely regulating the flow of combustible gases such as oxygen. ...	10/03/2006
7063102	Air tap assembly An air tap assembly includes an air pipe having an outer wall formed with a plurality of locking members, and a valve cap rotatably and movably mounted on the air pipe and having an inner wall formed with a plurality of locking members. Thus, the locking members of ...	06/20/2006
7040339	Suction inlet valve for fire truck pumpers A suction inlet valve for fire truck pumpers has a male body portion and a female body portion, the portions defining a chamber therein. A cone-shaped valve element is connected to a valve stem which has a cam body thereon with a cam slot therein. The cam slot recei...	05/09/2006
6994113	Closing device for use in a valve device for a pressurized gas cylinder A device for closing a gas inlet in a valve device for a pressurized gas cylinder has a freedom of translation between an extreme gas inlet closing position and an open position at an extreme stop position or an intermediate position determined by the position of a ...	02/07/2006
6948493	Anaesthetic apparatus An apparatus for delivering anaesthetic to human or animal patients. The apparatus is an anaesthetic machine which is arranged to mount components of an anaesthetic delivery circuit, and which includes a collector arrangement in the form of a manifold having a plura...	09/27/2005
6929238	Electric motor actuated stop and self-closing check valve An electric motor actuated stop/check valve for industrial use such as liquid pumping systems which has a controlled opening and closing rate when liquid flow is in a forward direction but closes quickly upon reverse flow of liquid with no action from the electric m...	08/16/2005
6899312	Pressure relief valve for flowing media A pressure relief valve for flowing media has a closing element (6), whose closing force can be set with both the setting of the closing force and the brief release of the closing element (6) performed with a single setting element. Teeth (22, 23	05/31/2005
6883776	Slit valve for a semiconductor processing system A slit valve for a semiconductor processing apparatus, for fluidly sealing a passage connecting two chambers of the apparatus, such as a substrate reaction chamber and a region outside the reaction chamber. The slit valve comprises an actuator plate movable within a...	04/26/2005
6871835	Flow control valve with automatic shutoff capability A valve includes a housing having a fluid inlet and a fluid outlet and defining a fluid flow path between the inlet and the outlet. A check valve positioned in the housing has a valve seat in the flow path from the inlet, a valve member movable between a seated posi...	03/29/2005
6725661	Valve device Valve device for evacuation of a gaseous medium under overpressure from a space (3) includes a valve housing (1a) with an opening (2) to the space (3); a valve disc (6) cooperating with a valve spindle (8), sealing th...	04/27/2004
6622749	Air faucet An improved air faucet allows an air mattress to be squeezed and deflated without sucking air during air discharging process. The air faucet includes an air duct coupled to a base seat. The air duct has an external screw section formed on a middle section...	09/23/2003
6619325	Hydraulic hybrid accumulator shut-off valve A hydraulic accumulator is equipped with a novel shut-off valve. The shut off-valve includes a valve body having a cylindrical hollow with a valve seat surrounding one end. The main piston including a piston head has a central opening and is slidably moun...	09/16/2003
6607007	Cylinder valve and bayonet check-filter with excess-flow protection feature A valve apparatus especially well-suited for use in gaseous oxygen delivery systems. A valve apparatus is provided that substantially reduces the risk of fire in high-pressure oxygen systems. The apparatus is particularly well-suited for use as a plug val...	08/19/2003
6341622	Pressure relief valve and arrangement for fire suppression water sprinkler system A valve and an arrangement for a fire suppression water sprinkler system includes a valve which has an inlet and an outlet with a restricted orifice to limit the flow through the valve to correspond to the flow through a single sprinkler head. The valve h...	01/29/2002
6309033	Switchable orifice solenoid with plate valve for an anti-lock brake system A switchable solenoid valve is disposed between the master cylinder port and the wheel caliper port for an anti-lock brake system. The switchable solenoid valve includes a valve housing, a valve seat that includes a center orifice and a plurality of perim...	10/30/2001
6308730	Gas stream monitor A gas stream monitor shall be provided that facilitates the adjustment of the reseat flow. The gas stream monitor consists of a gas-tight casing whose interior is equipped with a seat for a reseat body that is movable inside the casing and is kept in open...	10/30/2001
6244294	Radiator pressure release valve for a temperature control system A radiator pressure relief valve is disclosed for transferring fluid from a radiator to an overflow bottle to relieve pressure in the radiator. The valve includes a housing with an internal chamber and an inlet and outlet communicating with the chamber. A...	06/12/2001
6126409	Integral housing unit having a lockdown check valve and a pressure relief valve for a submersible pump and method of assembling the same A manifold assembly includes a housing unit which has a check valve assembly and a pressure relief valve assembly formed in one integral unit. When the check valve is in a closed position, the dispensing line is sealed off from the pumping assembly. In ad...	10/03/2000
6077249	Tubular shaft instrument A tubular shaft instrument, in particular a trocar, has an instrument channel which can be closed off by a flap valve. An actuation element serves to open the flap valve against the force of a closing spring. It is proposed that the actuation element be c...	06/20/2000
5918623	Starting valve The invention relates to a starting valve for progressive build-up of pressure in an installation through which pressure medium flows, comprising a housing with a first opening for coupling to a first component of the installation and a second opening for...	07/06/1999
5819791	Check valve including means to permit selective back flow A preferred embodiment of FIGS. 1-3 includes a check valve (10) with a pair of semicircular check valve members (34, 36) normally permitting fluid flow in one direction and blocking fluid flow in an opposite direction. Semicircular valve member (36) is re...	10/13/1998
5758681	Fluid cylinder pressure check valve device The present invention relates to a fluid cylinder pressure check valve device, for use during the recharging of cylinders with fluid(s). In use, the invention is attached to a valve assembly of the cylinder so that when the valve assembly is opened, resid...	06/02/1998
5735504	Variable overpressure relief valve A variable overpressure relief valve for a buoyancy compensator including an open hole base member for securement to a buoyancy compensator and a pair of spring biased floating disks in the base member sealing the hole and biased apart and held in place b...	04/07/1998
5725289	Electromagnetically actuated valve, in particular for slip-controlled hydraulic brake systems in motor vehicles An electromatically operated valve for automatic setting of a reduced flow cross section effective for a closed position of the valve is to be achieved. The valve has, in a valve dome, a longitudinally movable magnet armature with a separate valve push-ro...	03/10/1998
5662139	Pressure relief valve with lockout position A lever actuated pressure relief valve useful at the base of a gridded sprinkler system to perform three functions. The first function is as a pressure relief valve for the sprinkler system, the second function is a closed position for permitting the pres...	09/02/1997

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Class 251/83 - Spring