Class 251/191 - Packing expands with closing

Subclass of Class 251 - Valves and valve actuation
Definition: Subject matter wherein the piston rings or the packing upon
No. of patents: 26
Last issue date: 05/20/2003

Number	Title	Issue Date
6565065	Disc valve adaptor An adaptor is for a rising disc valve which has a handle for rotating a stem in a housing bore having a shoulder and which displaces a disc valve member which seals against a frusto-conical housing seat spaced from the shoulder. A stack of Belleville -ste...	05/20/2003
5718410	Small flow control valve with cartridge type seating arrangement A small flow control valve with cartridge type seating arrangement is shown and described. A conventional valve housing with inlet and outlet ports and a seat ring cartridge. A plug with a lower throttling profile engages within the seat ring bore. A defo...	02/17/1998
5311902	Reciprocating compressor valve A reciprocating positive displacement compressor is described having an intake or exhaust valve provided with a deformable seal means, such as a Belleville spring, that makes edge or area contact with a valve seat in the closed condition of the valve, is ...	05/17/1994
5118079	Removable fluid seal and method A removable fluid seal has a first deforming pin seated on a dead end of a fluid passage and a second deforming pin positioned in the opposite end of the fluid passage, with a spherical elastomeric member positioned between the first and the second defori...	06/02/1992
4830334	Resilient plug construction for a flow regulator incorporating stress limiting means In a flow regulator which is operated by axially compressing the two ends of a resilient cylindrical plug causing the plug to swell and expand outwardly to interrupt flow of natural gas and the like, a stress ring is disclosed. In the preferred embodiment...	05/16/1989
4712769	High temperature balanced valve trim The disclosure is directed to a seal forming means in a valve plug for use in a fluid control valve, particularly in high temperature and high pressure fluid applications. The valve plug of the invention generally comprises a main valve plug member and a ...	12/15/1987
4541608	High pressure shut-off valve A high pressure shut-off valve has a hollow valve body with an open end, closed end and a cylindrical cavity with a cover. Aligned inlet and outlet portions form a straight bore intersecting the valve cavity. A plug valve assembly has a supporting mandrel...	09/17/1985
4531545	Drilling choke valve A multiposition choke valve assembly comprises: (a) a valve body defining an interior chamber and inlet and outlet flow ports communicable with that chamber, (b) a valve stopper sub-assembly movable axially longitudinally in the chamber, the sub-assembly inclu...	07/30/1985
4471810	Valve apparatus A new and improved valve apparatus having an operating mechanism sealed in such a manner that the fluid pressure urging thereon produces offsetting or balancing forces to enhance ease of valve operation. To accomplish the force balancing, the flow closure...	09/18/1984
4433827	High pressure shut-off valve A high pressure shut-off valve consists of a hollow valve body having an open end, a closed end and a cylindrical cavity with a cover therefor. Aligned tubular inlet and outlet portions on opposite sides of the valve body form a continuous straight bore i...	02/28/1984
4382452	Exhaust flow control valve for manifold plate A throttle valve assembly for controlling flow of air through a passage. A housing is provided having a straight flow passage extending therethrough. The housing also has a bore formed therein in intersecting relationship to the passage. A valve is movabl...	05/10/1983
4315616	Dump valve This disclosure is directed to a dump valve. In the preferred and illustrated embodiment, the dump valve incorporates a valve operator and comprises a valve body having a side located port for admission of high pressure fluid and an axial outlet. The valv...	02/16/1982
4314688	Gate valve An improved gate valve for high fluid pressure applications has a housing with aligned inlet and outlet passages and a well intercepting those passages. A piston-type gate is slidably positioned in the well and movable by conventional means between an ope...	02/09/1982
4274433	Packed plug for a fluid valve In a valve structure, a valve plug apparatus to provide a leak-tight valve shut-off, is disclosed. The valve structure includes a valve body provided with an inlet passage, an outlet passage and an internal web portion intermediate the inlet and outlet pa...	06/23/1981
4206902	Inner element for a flow regulator A valve for a flow regulator employed in a fluid system is disclosed. The flow regulator includes a housing defining an internal chamber and a fluid inlet and outlet communicating with the chamber each adapted to be connected to the fluid system. Mounted ...	06/10/1980
4136852	Expansible plug valve A valve comprising a resiliently expansible and compressible plug movable in a valve chamber to open and close a flow passage intersected by the chamber. The plug has a sealing portion which is expanded outwardly against the walls of the chamber, e.g., by...	01/30/1979
4132386	Valve mechanism for a control valve The invention is an improved valve mechanism for controlling the flow in conduit to be used in combination with an adjustable valve. The adjustable valve includes a T-shaped valve body having a first bore extending therethrough and a second bore adjacent ...	01/02/1979
4111221	Low restriction, normally open valve construction having a deformable bladder A normally open valve construction utilizes a valve housing defining a fluid passageway extending through the housing between at least two ports, and an expandible, metallic bladder within the housing. The bladder is mounted in non-obstructing relationshi...	09/05/1978
4089504	Valve construction A valve having improved sealing means making use of a sealing member of resilient material which is compressed radially when the valve is closed. Compression causes the peripheral surface of the sealing member to be pressed into sealing engagement with a ...	05/16/1978
4073308	Valve A valve comprising a valve body having a bore and a plunger axially movable in the bore between an open and a closed position. The bore has a fixed valve seat therein and is in communication with an inlet port and outlet port on opposite sides of the bore...	02/14/1978
4037994	Pressure unloading valve device for compressor A valve device is disclosed for unloading pressure from a compressor of the type utilized in a medical respirator. The device is formed with a cylindrical chamber containing a compressible elastomeric member. Inlet and relief ports of the valve open into ...	07/26/1977
4015815	Contamination-resistant valve for high-temperature, high-pressure applications The valve for use in thermal shock deburring apparatus, in which oxygen and hydrogen are combined under explosive conditions, and which provides reliable shut-off of the respective gas component being supplied to an explosion jet chamber, and which preven...	04/05/1977
3995586	Coating apparatus Disclosed is a valve that has a torpedo shaped valving member in the middle of an enlarged passageway. The valving member contains an elastomeric sleeve that expands outwardly from a hinged area when compressed to form a line seal with the passageway. The...	12/07/1976
3990677	Expansible plug valve A valve comprising a resiliently expansible and compressible plug movable in a valve chamber to open and close a flow passage intersected by the chamber. The plug has a sealing portion which is expanded outwardly against the walls of the chamber, e.g., by...	11/09/1976
3961768	Plunger valves A plunger valve having a straight through passage closed by a cylindrical, elastic plunger. The plunger is movable at right angles to the through passage. It is connected to a screw-threaded stem by a retaining pin which is positioned in a longitudinal op...	06/08/1976
3954123	Aircraft lavatory drain plug A plug for an aircraft lavatory drain port having a radially expandable portion and a resilient sealing member covering the expandable portion. A locking portion is connected for securing the plug in sealing position....	05/04/1976

PatentStorm

Bizarre Patents

PatentStorm News

Class 251/191 - Packing expands with closing