Class 137/614.16 - One valve head provides seat for other head

Subclass of Class 137 - Fluid handling
Definition: Systems in which the movable element of one valve forms
No. of patents: 27
Last issue date: 04/29/2008

Number	Title	Issue Date
7364131	Non-return valve for use in a molding system The present invention relates to a non-return valve that can be configured for use anywhere along a molding material flow path in a molding system. The non-return valve of the present invention includes an improved means to restrict the backflow of melt therethrough...	04/29/2008
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
7198249	Electromagnetic shuttle valve An electromagnetic shuttle valve with two valve passages (5, 6) provides an increased cross-section of the second valve passage (6) by increasing the diameter of the second valve closure member (8). To this end, a compression spring (17) ...	04/03/2007
7168530	Waterproof universal drum brake hydraulic cylinder The invention discloses an improved drum brake hydraulic cylinder. In a preferred embodiment, the invention discloses an O-ring in an annular groove to seal the cylinder. One specifically disclosed embodiment shows an additional exterior seal over the piston and the...	01/30/2007
7128080	Surge prevention device A surge prevention valve may be used to prevent the formation of an initial surge of high pressure. The valve may be located, for example, between a high pressure gas cylinder and a medical pressure regulator. The valve is provided with first and second valves locat...	10/31/2006
6973891	Dual seal self-closing boat drain plug apparatus The present invention is a drain plug assembly designed and configured to remain in the drain hole of a conventional pleasure boat, regardless of whether the vessel is in or out of the water. This drain plug assembly includes a body assembly having a single chamber....	12/13/2005
6901962	Surge prevention device A surge prevention valve may be used to prevent the formation of an initial surge of high pressure. The valve may be located, for example, between a high pressure gas cylinder and a medical pressure regulator. The valve is provided with first and second valves locat...	06/07/2005
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
6622743	Surge prevention device A surge prevention valve may be used to prevent the formation of an initial surge of high pressure. The valve may be located, for example, between a high pressure oxygen cylinder and a medical pressure regulator. The valve also may be used for other purpo...	09/23/2003
5971356	Electromagnetically actuable valve The valve according to the invention in intended, in particular, for high-pressure gas containers containing up to 300 bar. It comprises a shut-off element which is hold on its valve seat under the action of a compression spring and of the gas pressure. I...	10/26/1999
5865213	Controllable valve The invention relates to an electromagnetically actuated, controllable valve with first and second valve stages, of which the first stage is actuated by an armature and the second stage functions automatically. An opening cross-section of the first valve ...	02/02/1999
4932435	Multi-stage flow regulating valve The problem of controlling overspeed and/or oscillation of a variable displacement hydromechanical actuation system is solved by a multi-stage flow regulating valve (18) which includes a valve body (20, 22) having a fluid inlet (24) and a fluid outlet (26...	06/12/1990
4892071	Throttle valve controlling apparatus employing electrically controlled actuator In a throttle valve controlling apparatus, there is provided a pair of first and second throttle valves. The first throttle valve is rotated by an electrically controlled actuator means, whereas the second throttle valve is rotated by an accelerator pedal...	01/09/1990
4823841	Fluid mixing device, in particular hot and cold water mixing device The hot and cold water mixing device contains a rotary slide which controls in opposite sense the inflow of cold and hot water. The rotary slide is provided with a device for suppressing the flow of hot and cold water through the rotary slide. In order to...	04/25/1989
4804017	Brake bleeder valve apparatus having integral check valve and method for bleeding brakes Method and apparatus for bleeding brakes includes a brake valve with an integral ball check which secures directly to a brake wheel cylinder. Method for bleeding the brakes includes securing a brake bleeder valve with integral check valve in each wheel cy...	02/14/1989
4747942	Pulse generator for an air pulsed jigging machine A wet jig mechanism for handling coal or other minerals wherein a container receives a slurry of water and coal and the water is pulsed by delivering an alternate charge of compressed air beneath the surface of the water and alternately venting the area b...	05/31/1988
4690169	Combined shut off and check valve A combination shut off and check valve is disclosed in which the shut off valve function is provided by a manipulable ball closure. A loose ball is contained in a chamber upstream of the ball closure. A seat for the loose ball is provided at the downstrea...	09/01/1987
4649952	Combined shut off and check valve A combination shut off and check valve is disclosed in which the shut off valve function is provided by a manipulable ball closure. The ball closure includes a seat in its flow hole on its upstream side for accepting a loose ball included in a chamber ups...	03/17/1987
4617964	Tight shut-off valve with flow control A flow control apparatus for use primarily in plug-type valves provides means for continuously varying the flow rate of fluid through the valve while using the same operator that is used to control the open and closed position of the valve. The invention ...	10/21/1986
4574839	Directional control valve with integral flow control valve The present invention is a pressure compensated directional control valve. The present invention allows the flow rate to a given hydraulic implement to be constant regardless of the load imposed upon the hydraulic implement or the hydraulic pressure suppl...	03/11/1986
4350321	Quick coupling device for pressurized fluid conduits A coupling device including a casing part and a nipple part both provided with a flow-through channel. The nipple part is designed to be inserted into the flow-through channel of the casing part to open a spring-loaded shut off valve and thereby open a fl...	09/21/1982
4294285	Multi-port valve A multiport valve has a valve member which is moved so as to place the valve inlet into communication with a selected one of several valve outlets, there being a control member between the valve member and valve outlet which prevents flow from any interme...	10/13/1981
4254792	Double-seat valve A double-seat valve has a first valve member and a second valve member which abut against one another after a predetermined stroke to an open position, so as to form a closed chamber. A draining conduit communicates with the thus-formed chamber. The valve...	03/10/1981
4111220	Shake responsive valve For use in an earthquake-prone environment, and especially as a gas valve, there is provided a valve body approximately symmetrical about a longitudinal axis and having a transverse intersecting plug bore through the body. A plug is rotatable in the bore ...	09/05/1978
4106750	Safety valve for pneumatic tools A safety valve for pneumatic tools, comprising first and second valve bodies which are movable relative to each other and which carry cooperating seat surfaces. The first valve body is of tubular shape and is displaceable between a closed and an opened po...	08/15/1978
4074686	Manually closable anti-backup trap A trap for a drain has a housing with a lateral exit port for water flowing in through an apertured lid and/or through a lateral entrance port. A tubular insert fitted to the sidewall with the exit port has a bottom inlet beneath the level of that port an...	02/21/1978
3986524	Valve construction and method of making the same A valve construction having a housing provided with an inlet and an outlet and a movable valve seat disposed between the inlet and the outlet. A movable valve member is provided for opening and closing the valve seat. A condition responsive unit is operat...	10/19/1976

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Class 137/614.16 - One valve head provides seat for other head