Class 251/163 - Encased

Subclass of Class 251 - Valves and valve actuation
Definition: Subject matter having the cam or wedge means within the
No. of patents: 75
Last issue date: 12/29/2009

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Number	Title	Issue Date
7637477	Gate valve apparatus of vacuum processing system A gate valve apparatus of a vacuum processing system includes a surrounding wall that defines a transfer space and has a transfer port. A first valve seat is defined around the transfer port. A valve body is movable within the surrounding wall to open/close the tran...	12/29/2009
7281700	Gate valve apparatus for vacuum processing system A gate valve apparatus includes a valve body to open and close a target object transfer port in a vacuum processing system. The valve body is reciprocated in a first direction relative to the transfer port. A support rod is connected to the valve body and extends in...	10/16/2007
7267323	Ball valve with cartridge A ball valve has a valve body having a chamber, aligned inlet and outlet passages providing flow therethrough, and an access passage communicating with the chamber. A replaceable cartridge assembly is seated in the chamber and includes a generally spherical ball hav...	09/11/2007
7172173	Switch valve having a locking effect A switch valve includes a valve body, a control stem rotatably mounted on the valve body, a limit ring mounted on the valve body, a locking member secured on the control stem and hidden in the limit ring, and a rotation head removably mounted on the limit ring and d...	02/06/2007
7123463	Surge lightning protection device A lightning surge protector configured for use with coaxial lines is disclosed. The lightning surge protector includes an inner conductor comprising two conductive portions mechanically and capacitively coupled together, and displaced from one another, by a dielectr...	10/17/2006
7032883	Hybrid butterfly fluid control valve A flow control valve system has a housing that defines a flow path, a throttle element disposed in the flow path, and a linkage assembly coupled to the throttle element and oriented substantially outside the flow path. With such an orientation, the linkage assembly ...	04/25/2006
7032885	Throttle body and method of assembly A throttle body for an automobile and a method of assembly of a throttle body are provided. The throttle body includes a throttle shaft defining a rotational axis, a housing having a bore, a deformable member located on the throttle shaft and at least partially-loca...	04/25/2006
6782912	Throttle assembly for a flowing medium In a throttle assembly for a flowing medium having an inlet and outlet and having two throttle devices disposed between them coaxially to one another, which each have at least one flow window for the passage of a flow of the medium flowing from the inlet to the outl...	08/31/2004
6681793	Top-entry ball valve assembly having camming surfaces A top-entry ball valve assembly that includes top and bottom camming plates which are coupled to top and bottom shoulders of the ball valve member. The camming plates include a first pair of opposing camming corner-surfaces to displace the spring-biased v...	01/27/2004
6397664	Method and apparatus for detecting leakage in a flow control valve A method for detecting leakage in a bellow-type flow control valve and an apparatus for use in such detection are described. In the method, a leakage detection device can be connected in line and in fluid communication between a shut-off valve and a bello...	06/04/2002
6186174	Valve assembly Multi-port valve assemblies with, typically, two-piece housings are disclosed. Particularly useful in connection with swimming pools and associated water pumps, the assemblies avoid reliance on an elongated handle to effect rotation of the internal struct...	02/13/2001
6026845	Flow, split Venturi, axially-rotated valve The present invention provides an axially-rotated valve which permits increased flow rates and lower pressure drop (characterized by a lower loss coefficient) by using an axial eccentric split venturi with two portions where at least one portion is rotata...	02/22/2000
5755427	Self adjusting ball valve assembly A self adjusting ball valve assembly having a ball valve body, a shaft assembly or shaft mounted to the ball valve body, a spherical segment carried by the shaft, and elements for adjusting the position of the shaft. The ball valve body has a port for flu...	05/26/1998
5611516	Rotary ball valve with retracting seat In a preferred ball-valve construction, a valve body has spaced inlet and outlet ports on an axis of flow that is controlled by an interposed ball; the ball is rotatable about a body-fixed axis which intersects the axis of flow at the geometric center of ...	03/18/1997
5542644	Plug-valve having a plug assembly with retractible seals that can be removed without leakage An improved plug type valve of the type having seat and reseat retractable seals, the plug assembly having a tapered faceted cylindrical plug with a waterway therethrough. A first pair of shut-off slips is positioned on the plug for axial movement, relati...	08/06/1996
5342028	Expanding valve assembly An expanding valve assembly which includes a closure member supporting at least one segment supported on one side thereof for movement toward a valve seating surface upon movement of the closure member in selective response to valve stem movement. Each se...	08/30/1994
5330157	Rotary disk valve A rotary disk valve has a valve body provided with an annular valve seat section defining a central opening to be removably closed by a valve disk. The valve disk is supported by a drive assembly which includes a drive shaft mounted on the valve body and ...	07/19/1994
5265845	Cam-actuated split ball valve A split ball closure member is disposed in the central chamber of a valve. The closure member includes a pair of sealing ball halves each having a substantially spherical sealing surface adapted to seal against annular seats in the valve body around the f...	11/30/1993
5263685	Valve seat A valve seat arrangement sealing against a valve core in a valve, particularly for a ball valve, having an inner ring with a first deflectable sealing lip and an outer ring with a second deflectable sealing lip. The first deflectable lip is arranged to pr...	11/23/1993
5259590	Valve seat for high temperature valve Valve such as a ball valve with a metal seat ring assembly comprising an outer ring seated in the valve body and an inner ring seated in the outer ring. The outer ring is formed with a lip projecting inwardly and presenting a sealing surface for contact w...	11/09/1993
5253843	Retractable-gasket valve having two stiffnesses The retractable-gasket ball valve includes sealing means fixed on the valve body, and including, in particular, a gasket for providing sealing between the shutter member and the valve body when the shutter member is in a closed position, and further inclu...	10/19/1993
5205535	Expanding gate valve assembly An expanding gate valve assembly which includes a gate, a stem for actuating the gate, a segment mounted on one side of the gate, or in an alternate, bidirectional embodiment, two segments with one segment movably mounted on each opposite side of the gate...	04/27/1993
5193780	Low friction ball valve A low friction ball valve used for instance in an automatic shutoff valve system. The valve mechanism includes a spring loaded ball valve normally latched in the open position which is unlatched and hence closes in one version by the contraction of a BioM...	03/16/1993
5117858	Top entry ball valves with cam adjustable seats A top entry ball valve comprises a housing having an interior cavity sufficiently large to receive a conventional ball and conventional seat rings through an opening in the housing. After the ball/seat package has been inserted into the cavity, a cam arra...	06/02/1992
5118078	Butterfly valve having improved sealing characteristics A fully sealing butterfly valve throttles flow rates through a flow channel and completely ceases flow. A throttle plate rotates into a close position and then moves axially to seat against a seal. The axial movement directly corresponds to rotation of an...	06/02/1992
5108073	Butterfly valve and drive mechanism for rotation and reciprocation of valve stem of the butterfly valve A butterfly valve of the type wherein a valve stem is prevented from sliding engagement with a valve seat is disclosed which assures more complete shaft sealing without causing any inconvenience to the controllability of the valve body and valve stem and ...	04/28/1992
5080140	Rotary air valve for air distribution system in vehicles A heating, ventilating and air conditioning system for vehicles incorporating a rotary air valve mounted in a housing for limited arcuate movement with respect to a pivot axis to adjust the amount of opening of two adjacent air flow windows to thereby con...	01/14/1992
5005805	Lift-turn valve and actuator assembly A lift-turn valve actuator is provided for tapered plug valve and slip assemblies that accomplishes vertical movement of the plug and retraction of the slips from sealing engagement with the valve body prior to rotation of the plug member 90° to its open...	04/09/1991
4934408	Ball valve Flow control valves (10) and (80) each include a cylindrical body (11) or (82) that is open through a number of ports (13), (14) and (15), the ports to be opened and closed by a resilient ball (16) that is selectively moved into and out of alignment with ...	06/19/1990
4930748	Shutoff and regulating valve A shutoff and regulating valve contains, in a housing (2), a shutoff element which is designed especially as a stopcock (8) and which is arranged to be rotatable by means of a stem (26). The stem (26) is guided outward through a housing cover (20), a firs...	06/05/1990
4921598	Selector valve, especially a central control valve for a water treatment device A central control valve arrangement for a water treatment system. The central control valve arrangement includes two independently positionable four-way ball valves and at least one of the balls of the ball valve serving as valve body includes with two L-...	05/01/1990
4921212	Hybrid butterfly valve A hybrid butterfly valve has a stationary seat and a valve closure disk which may rotate together with an actuating shaft from the fully open position to a position wherein the disk is aligned with the seat, and thereafter may be moved linearly into seali...	05/01/1990
4917354	Dual action ball valve A dual-action ball valve having a sleeve fixedly mounted within the valve bonnet. Spiral slots are provided in the sleeve for receiving a transverse guide pin mounted in the valve stem. The lower end of the valve stem is provided with sloping cam surfaces...	04/17/1990
4883253	Ball valve and methods of fabrication A ball valve and a method for fabricating this ball valve wherein a ball seat, formed of a synthetic resin, is mounted at each end of a flow passage in a ball of the valve. A sealing end portion of the ball seat contacts the spherical surface of the ball ...	11/28/1989
4869285	Flow selector device A flow selector device makes use of an annular plate having a plurality of flow control orifices spaced about its perimeter. The plate is rotatably received within a housing that includes a first fluid conduit formed therein. The plate is selectively rota...	09/26/1989
4817916	Butterfly valve A butterfly valve wherein at least one cam is mounted on the valve shaft and located in a cam chamber associated with the valve disc. The cam cooperates with the cam chamber to rotate the valve disc between an open position and a closed position in alignm...	04/04/1989
4770202	Valves providing transfer ports A valve body 10 supports a rotary valve member 20 having a transfer port 22. Sealing between a port 17 of the valve and the member 20 is achieved by a sleeve 30 movable towards and away from the member 20. In a valve closed position seal means in a flat e...	09/13/1988
4693451	Valve structures A valve structure is provided having a housing with an open top valve chamber and inlet and outlet passages on opposite sides of the valve chamber forming a through passage with the valve chamber through said housing, a generally spherical radius valve se...	09/15/1987
4683906	Trunnion type ball valve A trunnion type ball valve arranged so that biasing means is not needed to establish a seal between the valve seats and the ball when the valve is in the closed position. There is no load on the valve seats in the open position and a sufficient load in th...	08/04/1987
4676480	Ball valve A ball valve comprising a valve body defining inlet and outlet sections, and a ball with a calibrated through-port. The valve further comprises a stem to rotate the ball between open and closed positions, a seal to insure a fluid tight closure of the valv...	06/30/1987

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Class 251/163 - Encased