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| Number | Title | Issue Date |
| 7819383 | Three-position selector valve A selector valve (102) having at least first and second ports (108 and 110) is provided. The selector valve includes a closure element (120) selectively displaceable between a first position, wherein the closure element (120) seali... | 10/26/2010 |
| 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 |
| 7198251 | Opening/closing mechanism for vacuum processing apparatus and vacuum processing apparatus using the same An opening/closing mechanism for a vacuum processing apparatus comprises a link mechanism comprising a supporting member having first and second valve elements for closing first and second opening portions, and a base end side member rotatably attached at a rear edg... | 04/03/2007 |
| 7051994 | Control valve with detachable descrete curtain valve assembly Valves, particularly useful for controlling flow of heat transfer fluids in various heating, air conditioning and ventilation systems, are provided. The valves are of the curtain valve type and operate at very low torque and provide easy assembly and repair. The val... | 05/30/2006 |
| 7036183 | Hose and wand assembly A vacuum cleaner (100) comprises a main body (3), separating apparatus, a flexible hose (20) having one end for coupling to an input of the separating apparatus and the other end terminating in a connecting part (40), a rigid pipe (9, ... | 05/02/2006 |
| 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 |
| 6994100 | Metering valve A metering valve for metering dry powder material such as cement. The interior of the valve housing is expanded outward beginning at the sealing surface or lip located adjacent to the inlet opening, thereby forming an enlarged gap between the valve sleeve and housin... | 02/07/2006 |
| 6889649 | Valve for opening and closing a tube A valve, particularly a switching cylinder, for opening and closing a pipe, especially for use in an intake manifold for a multi-cylinder internal combustion engine having an air distribution chamber and individual intake pipes positioned next to one another which t... | 05/10/2005 |
| 6789565 | Metering valve A metering valve for metering dry powder material such as cement. The interior of the valve housing is expanded outward beginning at the sealing surface or lip located adjacent to the inlet opening, thereby forming an enlarged gap between the valve sleeve and housin... | 09/14/2004 |
| 6598853 | Plug valve with cam actuated seal means A rotary valve for blocking opposed apertures of a valve body includes a central assembly comprising laterally offset hemi-cylindrical first camming surfaces on an exterior of a rotatable spool and substantially hemi-cylindrical seal plates with hemi-cyli... | 07/29/2003 |
| 6572078 | Changover valve A changeover valve comprises a first valve member and a second valve member. The first value member has an aperture. The second valve member has first and second apertures. The first valve member is movable relative to the second valve member for selectiv... | 06/03/2003 |
| 6378841 | Quarter-turn rotary plug valve with seats reciprocable during operation A method and apparatus for controlling fluid flow with a quarter-turn plug valve with seats operated to lift off the sealing surface of the plug prior to plug rotation and to reseat upon completion of plug rotation. One embodiment shown relates to a quart... | 04/30/2002 |
| 6135416 | Butterfly valve A butterfly valve includes a valve housing having a fluid conduit, a seal plate assembly including a seal plate, and a closure assembly. The closure assembly includes a main shaft mounted in the valve housing and rotatable about a longitudinal axis betwee... | 10/24/2000 |
| 6042083 | Butterfly valve A butterfly valve is disclosed, wherein a pair of rotating shafts for rotating a disk. One of the shafts is used to rotate the disk by 90 degree, the other is used to linearly displace the disk, thereby tightly depressing the disk on the valve seat to com... | 03/28/2000 |
| 5819798 | Multiport rotary indexing vacuum valve in a liquid ink printer A multiple port rotary indexing vacuum valve in a liquid ink printer including a selecting member and a multiple port member. The selecting member, defines an aperture therethrough and a first axis, including a first oscillatory surface. The multiple port... | 10/13/1998 |
| 5467965 | Valve system A butterfly valve comprises: an elongate valve body (1) having a flange (2) at one end, a valve plate (4), operative between an open and closed position, forming a seal with the said flange (2) in the closed position, and a valve plate support structure i... | 11/21/1995 |
| 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 |
| 5074525 | Hygienic stop valve A stop valve is disclosed which includes a means for venting fluid to the exterior of the valve housing if the valve is not properly adjusted, thereby providing a readily detectable visual indication that the valve needs to be readjusted or retightened. I... | 12/24/1991 |
| 4989641 | Rotary selector valve A multi-port valve internally supports a rotatable trunnion having an elbow passage between a nozzle portion of the trunnion and a lower end outlet that communicates with a test port of the valve body. The outer end of the nozzle has an axially reciprocab... | 02/05/1991 |
| 4964435 | Shuttle valve Shuttle valves are disclosed including a housing with an inlet and two outlets and with a self-aligning valve therein which includes a seat for closing one of the outlets. The seat includes a valve disc with a spherical seating surface corresponding to th... | 10/23/1990 |
| 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 |
| 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 |
| 4867232 | Fluid flow control valve A fluid flow control valve for use, in particular, in a heating and cooling system for a building, enables change-over of interconnections between ducts connected to rooms of the building and to the exterior and ducts connected to a heat recovery module f... | 09/19/1989 |
| 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 |
| 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 |
| 4657222 | Valve A valve comprising a valve body having a tapered conical bore and an opposed inlet and outlet openings. A tapered cage abuts the conical bore. The cage is designed for easy replacement. A stopper is arranged within the cage. The stopper has a control vane... | 04/14/1987 |
| 4580762 | Closure device for a liquid-carrying pipe The device comprises a body (1) provided with two coaxial circular openings (3, 4) for connecting two sections of pipe, wherein each opening has an oblique seat (5, 6) receiving a wedge formed of two counter-seats (9, 10), a spherical ball (11) and a cage... | 04/08/1986 |
| 4579316 | Metal seated ball valves An arrangement for top entry ball valve, providing relief from seating load when turning the ball to effect either opening or closing of the valve by a handle connected to the ball via a stem. The arrangement including: a nut having an external thread the... | 04/01/1986 |
| 4576360 | Floating disc butterfly valves This invention relates to a butterfly valve comprising a floating disc wherein the seating pressure between the valve seat and the rim of the floating disc is relieved prior to the rotation of the disc for opening and closing, and the seating pressure is ... | 03/18/1986 |
| 4546953 | Ball valve An improved ball valve is disclosed, which is particularly adapted for use with pipelines of large diameter, possibly of the kind intended to convey toxic or dangerous fluids and for which a virtually perfect seal is required, said valve having a control ... | 10/15/1985 |
| 4520995 | Dished disc free-disc butterfly valve This invention relates to the dished discs employed in the construction of the free-disc or floating disc butterfly valves wherein the disc pivotably disposed in the valve body to block the fluid passage is shaped like a dish. The valve stem is mechanical... | 06/04/1985 |
| 4512372 | Floating disc divert valve This invention relates to a divert valve comprising a pair of disc valves operated by a common actuator wherein the tolerance in the mating between the valve seat and the disc in one disc valve disposed in the first bifurcating pipe is controlled independ... | 04/23/1985 |
| 4450732 | Device for imposing the linear and angular movement to the valve stem This invention relates to the device for imposing a linear movement to the valve stem of the free-disc butterfly valves or the free-ball-plug valves in one direction before imposing a rotating movement to open the valve and another linear movement to the ... | 05/29/1984 |
| 4440380 | Wedgeball valve At least one ball valve segment is located within a partial valve cage mounted within a tank. The cage is integral with a valve housing removably mounted within a tank mounting flange. The housing includes an inclined sealing surface which the ball valve ... | 04/03/1984 |
| 4440382 | Valve with a direct passage and rotary control Valve with a direct passage and rotary control including a body sealed by a cover and both of which are provided with an orifice, and wherein the valve also includes two coaxial plates having in each case an orifice and positioned between the body and the... | 04/03/1984 |
| 4393892 | Rotary valve for controlling the flow of a solid particulate material A rotary valve for controlling flow of pulverulent solids has diametrically opposed obturators carried on a rotary support and cooperating with respective valve ports in an internal circumferential surface of a cylindrical valve body, the obturators being... | 07/19/1983 |
| 4313592 | Butterfly valve A butterfly valve includes an annular valve seat and a disc-like valve member mounted both for rotation about an axis parallel to the valve seat and for axial displacement relative to the seat. The actuating mechanism automatically effects sequential moti... | 02/02/1982 |
| 4265113 | Sliding valve assembly for use in gas meters or the like For use in gas meters and the like, an improved sliding valve assembly constructed so as to be capable of self restoring the relative sliding motion between a sliding valve and its valve seat when a viscous foreign material tending to accumulate on the va... | 05/05/1981 |
| 4231440 | Rotary, segmented, expansible valves A rotary, segmented, expansible valve comprising a valve body having a fluid passage and a body opening intersecting the fluid passage, a valve member rotatably mounted in the valve body opening and divided into four quarter segments, the valve member hav... | 11/04/1980 |
| 4215846 | Multiportion unitary valve seat and valve incorporating it The disclosed valve seat is a unitary member consisting of a rigid annular portion supported from an annular base portion by a resilient, annular, wall-like connecting portion. In the disclosed valve, this base portion is secured in the valve housing to s... | 08/05/1980 |
