41
David P Herd, Duane E Gibson: Seal. Smith International, Ned L Conley David Alan Rose William E Shull, May 29, 1984: US04451047 (40 worldwide citation)

Combined metal-to-metal/compliant material stem sealing means for high pressure, balanced, rising stem gate valve includes at least one seal set at each of the actuator and balance stems. Each seal set comprises a pair of frustoconical metal ring gaskets between which are disposed two make-up rings ...


42
Alfred D Ledonne, George A Scheuering: Method and apparatus for stopping fluid escape from pipe mains. Coupling Systems, Buell Blenko & Ziesenheim, November 28, 1978: US04127141 (40 worldwide citation)

A method and apparatus are provided for sealing the opening in the sidewall of a fluid carrying main during replacement of a service tee or the like comprising a gate valve, means on end of said gate valve for engaging the end of a service tee remote from the main, a plug wrench having an elongate s ...


43
Spiros G Raftis: Tide gate valve. Red Valve Company, Kirschstein Kirschstein Ottinger & Israel, January 8, 1985: US04492253 (39 worldwide citation)

A tide gate check valve in which at least three converging sides are provided at a tapered region of a flexible sleeve, so that on reverse back pressure build-up of fluid, reverse fluid flow is prevented, while the valve sleeve does not invert or collapse. The present configuration features embedded ...


44
Long George M: Add-on stopper valve for existing piping. Institute of Gas Technology, Dominik Knechtel Godula & Demeur, March 26, 1974: US3799182 (39 worldwide citation)

The invention comprises an add-on valve which includes, generally, a holding chamber which is adapted to be fixedly secured to a pipe, a gate valve assembly which is adapted to be removably affixed to the holding chamber, a saw chamber assembly including a saw for sawing an opening into the pipe, a ...


45
John Benson: Exhaust brake valve. The Weatherhead Company, McNenny Pearne Gordon Gail Dickinson & Schiller, October 18, 1977: US04054156 (38 worldwide citation)

An exhaust brake valve assembly structurally arranged to provide reliable operation with relatively quick response. The assembly includes a sliding gate valve member driven by a power actuator through a lost motion connection which generates a desirable impact force on the gate to overcome static fr ...


46
William R Wheeler: High vacuum gate valve. Varian Associates, Stanley Z Cole, Leon F Herbert, August 10, 1976: US03973753 (38 worldwide citation)

Gate valve having a closure member mounted on a swinging arm pivotally mounted for movement transversely of the axis of the valve openings. A wedge member carried by the arm drives the closure member in a direction parallel to the axis of the openings when moved longitudinally of the arm. An actuato ...


47
Gary C Ettinger, John M White: Isolation valves. Applied Komatsu Technology, Thomason Moser and Patterson, June 27, 2000: US06079693 (37 worldwide citation)

Isolation valves for selectively sealing a first region from a second region. A gate valve can include a housing which defines a channel between the first and second regions. The valve includes a gate, located in the housing, and displaceable between a stowed position and a deployed position. When t ...


48
Brian K McMillin, Farro F Kaveh, Michael S Barnes: Method and apparatus for pressure control in vacuum processors. LAM Research Corporation, Pennie & Edmonds, November 7, 2000: US06142163 (37 worldwide citation)

A method and apparatus is disclosed for controlling the pressure of a reaction chamber in wafer processing equipment. The disclosed apparatus and method uses a ballast port for inserting gas into the evacuation system, thereby controlling the pressure in the reaction chamber. The disclosed apparatus ...


49
Edward J Stevenson, Donald E Dean: Hot air welder for welding roofing material. Fulwider Patton Rieber Lee & Utecht, April 3, 1984: US04440588 (37 worldwide citation)

An improved hot air welder which includes a blower communicating with a heater assembly mounted on a chassis wherein the chassis has coupled thereto a pressure wheel and tracking wheel, includes means for adjusting the angle of orientation of the pressure wheel and tracking wheel with respect to the ...


50
Bertazzoni Roberto: Device for controlling the washing of the filter of a dishwasher. Smeg, December 18, 1996: EP0748607-A2 (37 worldwide citation)

A device for controlling the washing of the filter (2) of a dishwasher performed by nozzles (7) fed through a cleaning duct (6) which branches out from the feed duct (5) coming from the washing pump, includes a valve suitable to interrupt the water flow upstream from said nozzles (7), said valve bei ...



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