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| Number | Title | Issue Date |
| 7575220 | Curved slit valve door Embodiments of an apparatus for sealing a substrate transfer passage in a chamber are provided. In one embodiment, an apparatus for sealing a substrate transfer passage in a chamber includes an elongated door member having a convex sealing face and a backside. In an... | 08/18/2009 |
| 6974121 | Fluid flow control valve with bi-directional shutoff A control valve of the ball type with bi-directional shutoff capabilities is disclosed. The ball valve including an inlet and an outlet, a ball element and a seal assembly. When closing the valve, the ball element, which is eccentrically mounted on a shaft, rotates ... | 12/13/2005 |
| 6902145 | Regulating slide valve Regulating slide valve comprising a valve body having a valve opening, and a valve plate which has two side surfaces and which is displaceable along a displacement path between an initial position in which it releases the valve opening and an end position in which i... | 06/07/2005 |
| 6439538 | Pressure variable valve apparatus and set pressure detecting apparatus of the valve apparatus A pressure variable valve apparatus includes a mover constituted to be embedded in the body and movable linearly in B direction in a main body to change pressure for releasing closure of a valve flow path by a valve element, a fixed magnetic marker provid... | 08/27/2002 |
| 6391019 | Valve apparatus and valve system using thereof A valve apparatus of a valve system includes a long-sized elastic member a base end portion of which is fixed and a front end portion of which is brought into contact with a valve element and a movable member capable of moving in B1 and B2 directions actu... | 05/21/2002 |
| 5779223 | Valve with rolling closure member A valve for controlling the flow of a fluid, in particular a liquid, said valve comprising a closure member (1) of compact shape which is resiliently deformable, at least superficially, and which is suitable for closing or exposing a fluid flow orifice (2... | 07/14/1998 |
| 5620165 | Retracting ring seal valve A retracting ring seal valve is disclosed for adjustably restricting and permitting fluid flow in a two-direction fluid control system. In a particular embodiment the invention comprises a valve body that defines a central passage through which the fluid ... | 04/15/1997 |
| 5547099 | Cover assembly for permitting access into a container without removal therefrom A cover assembly for a container includes: a cylinder base body with an axial bore therethrough, a lower portion for engaging an entry of the container, and an annular flange extending inwardly and radially into the axial bore; a shield mounted on an uppe... | 08/20/1996 |
| 5542684 | Cantilever spring seals for gas isolators A seal for a gas isolator comprises a cantilever leaf spring (1) attached to a fixed frame or a movable member (2) of the isolator, and a bias spring (3) acting on the leaf spring, and a bar (4) disposed below the seal for clamping and supporting the latt... | 08/06/1996 |
| 5169123 | Steel ball valve A valve, with a ball having a shaft (5), comprises, at least on the "upstream" side, a seat (14) that can move in the direction in which the fluid flows (F). Seat (14) is connected to body (1) of the valve by an annular membrane (21), constituting a wall ... | 12/08/1992 |
| 5033713 | Temperature-sensitive actuating apparatus for a servo-apparatus The temperature sensitive apparatus controls fluid flow from one line to others and includes an elongated wire of a shaped memory wire that changes in length with changes in temperature extended into a valve housing for pivotally moving valve mechanism in... | 07/23/1991 |
| 4962911 | Hemi-wedge valve The present invention is directed to an improved valve comprising a valve housing, a fluid path therethrough, a seat disposed about the fluid path, a rotatable, curved wedge disposed in the fluid path, an actuator for rotating the wedge between its closed... | 10/16/1990 |
| 4823836 | Dampers with leaf spring seals A leaf spring seal to effect sealing contact between such members as a damper blade and a frame consists of a set of leaf springs having their inner portions held together by clamping components of which one is a bar and the other the inner portion of a l... | 04/25/1989 |
| 4821771 | Diverter valve with bellows seal A diverter valve for diverting the flow of hot gases has a valve door pivotable between two outlets, each of which is surrounded by a bellows seal having a sidewall of significant width for continuous with the valve door and defining with the door a seal ... | 04/18/1989 |
| 4770392 | Shut-off device for pipes For a shut-off device comprising a tubular housing to be built into a pipe and a rotary valve for which a driving shaft penetrating the housing and a seat in the housing are provided, a ring wheel (4) with movable bearings (9) being disposed on the drivin... | 09/13/1988 |
| 4745944 | Self-cleaning, fluid pressure biased gate valve A drive shaft mounted for rotation about its axis within a gate valve casing terminates, internally within a valve chamber, in a radial arm which couples to a valve disk. The disk seats on the valve casing and is movable between an overlying position rela... | 05/24/1988 |
| 4526200 | Blocking valve for liquids The invention is concerned with a blocking valve for liquids, which valve comprises a body (1), which forms a cylindrical valve housing (2) that is provided with flow openings (3), and a spindle (4) turnably mounted in the valve housing, the said spindle ... | 07/02/1985 |
| 4519579 | Cam valve self-centering seat A fluid valve capable of operation in high pressure, bidirectional flowpaths includes a chamber having a circular port in which an axially and radially movable seat ring is engaged by an eccentrically movable valve plug having a spherically convex sealing... | 05/28/1985 |
| 4436116 | Four-way valve A four-way valve for use in a railroad air brake system has a housing with an internal chamber and a plurality of ports in communication with the chamber. Two of the ports are adapted for connection to a railroad car brake pipe with an intermediate port b... | 03/13/1984 |
| 4253485 | Valve for opening and closing a fluid conduit A valve for opening and closing a fluid conduit of the type having a generally wide cross section, the conduit having a transverse slit therein to allow for movement of a shut-off plate therethrough. The shut-off plate has a spherical shape and defines a ... | 03/03/1981 |
| 4091475 | Portable toilets A two piece portable toilet is described. The toilet includes a bowl unit which defines a toilet bowl having a discharge opening, and a reservoir for a flushing liquid, said reservoir having a normally closed filler opening. A holding tank is normally dis... | 05/30/1978 |
