Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7537198 | Direct double-acting in-line shut-off gate valve The present invention provides an actuated gate valve including a gate valve housing and an actuating device attached to one end of the gate valve housing. The gate valve housing includes a displaceable valve plate, and the actuating device includes an actuator rod ... | 05/26/2009 |
| 7464913 | Orifice valve for bulk solids An orifice valve having a moveable gate to control the flow of solids in a closed conveying system. The invention encompasses a valve housing with two complementary valve sections, each of a unitary construction. A single plate has a first planar surface, two oppose... | 12/16/2008 |
| 7431264 | Knife gate valve A valve for controlling the flow of materials is provided. The valve has a valve body having a bore, a guide attached to the valve body, a gate movable within the guide into and out of the bore, and an actuator for the gate, the bore of the valve body having a profi... | 10/07/2008 |
| 7422653 | Single-sided inflatable vertical slit valve A vacuum chamber having a gate valve including a chamber housing defining an internal vacuum region and first and second openings through the chamber housing and a gate valve secured to the chamber housing. The gate valve includes a sealing door located in the proce... | 09/09/2008 |
| 7357371 | Isolation valve seal Methods and apparatus for sealing an aperture that provides fluid communication between a second and first chamber of a dual chamber orifice fitting. A sealing assembly comprises a closure member that is rotatably moveable between an open and closed position relativ... | 04/15/2008 |
| 7322561 | Vacuum processing apparatus The invention provides a highly reliable plasma processing apparatus having stable sealing performance. The vacuum processing apparatus comprises a vacuum vessel 509 having its inside decompressed, an opening 1201 disposed on a wall of the vacuum vesse... | 01/29/2008 |
| 7255329 | Gate valve with offset valve stem An improved gate valve has a main body defining a flow passage, and a cylindrical gate member, which has a continuous seal disposed within a groove in the gate surface. The gate is actuated by a valve stem movable through a bonnet connected to the main body, with th... | 08/14/2007 |
| 7235964 | Test head positioning system and method An apparatus for supporting a load includes pneumatic units and couplers coupled to opposite sides of the load. The couplers move the load parallel to a first axis responsive to actuation of the pneumatic units. At least one of the couplers rotate the load about a s... | 06/26/2007 |
| 7234679 | Gate valve A gate valve has a transfer chamber-side valve element and a process chamber-side valve element connected to a single shaft. A rotary latch pivotably supported on an inner surface of one of the valve element with the rotary latch having a latch surface at a forward ... | 06/26/2007 |
| 7231934 | Shut-off actuator with gas generation device A shut-off device, in particular for application in the extraction of natural gas and mineral oil, has a shut-off housing (3) comprising an admission channel (2) and in which a shut-off organ (4) is supported in an adjustable manner relative to ... | 06/19/2007 |
| 7201361 | Gate valve having reduced friction Valve having a valve housing, a valve member slidable in the valve housing between open and closed positions, and a friction reducer to reduce friction between the valve member and the valve housing. The friction reducer comprises at least one guide shoe made of low... | 04/10/2007 |
| 7163191 | High pressure gate valve A high-pressure gate valve for control of bulk materials includes a main body with an opening for passing bulk material, an upper body, a slideable blade, and lifting structure configured to raise the blade in a planar motion, perpendicular to the primary direction ... | 01/16/2007 |
| 7134642 | Vacuum gate valve The invention provides a vacuum gate valve for closing off an opening. The vacuum gate valve can have a valve plate that can be turned so that the alignment of the valve plate will adapt to a valve seat when the valve plate is pressed against the valve seat. ... | 11/14/2006 |
| 7066444 | Pressure balanced fluid control device The present invention is directed to a pressure balanced fluid control device. In one illustrative embodiment, the device comprises a body, a bonnet coupled to the body, a valve stem operatively coupled to a gate positioned in the body, a valve stem seal positioned ... | 06/27/2006 |
| 7044149 | Pipe fitting A pipe fitting with a body adapted for connection at a first end thereof to a supply pipe and at a second end thereof to a distribution pipe so as to permit fluid communication between the supply pipe and the distribution pipe. The body is provided with first valve ... | 05/16/2006 |
| 7004452 | Valve seal assemblies and methods A method of sealing a valve engaging member to a valve body about a borehole and structure thereof. Two seal members disposed on either side of the valve engaging member include a seat member adjacent the valve engaging member and a pocket insert adjacent the seat m... | 02/28/2006 |
| 7000899 | Shutoff device A shutoff device for shutting off liquids or gases comprises a device housing (10) and a device (13) movable in said housing (10), the device (13) being provided with an opening (14). For sealing purposes, annular sealing bodies ( | 02/21/2006 |
| 6997135 | Valve for a milking apparatus A valve assembly adapted to be used in a milking operation where the valve assembly comprises an actuator portion and a valve portion where the valve portion has a milking position and a cleaning position where when in a milking position a transverse slot located be... | 02/14/2006 |
| 6997041 | Dual slide gate valve and method for using same A method and device for pressure testing a pipe line is provided wherein a fitting is inserted into the pipeline by inserting male ends of the pipeline into female ends of the fitting to define a flow path through the fitting extending along a longitudinal axis. The... | 02/14/2006 |
| 6964304 | Technique for maintaining pressure integrity in a submersible system A technique for maintaining pressure integrity within a submersible system. The system utilizes a pressure housing with an internal component, such as a valve. The internal component is actuated by an external actuator via an actuator stem. A seal region is position... | 11/15/2005 |
| 6957816 | Loop seal for knife gate valve A seal for use with a knife gate valve is disclosed, the seal having a loop to which is attached an axially facing sealing lobe. A sealing surface is positioned on the sealing lobe, the sealing surface having an axially projecting leading edge and flanking annular s... | 10/25/2005 |
| 6942194 | Gate valve The invention relates to a gate valve with a housing, having an inlet and an outlet, between which a flow area is arranged, with a sealing insert in the flow area and a sliding element cooperating with a contact area of the sealing insert in the closed state. In a g... | 09/13/2005 |
| 6942192 | Gate valve with flow-through gate A gate valve for controlling the flow of fluid through a component having a fluid flow passage that includes at least a first branch and a second branch, the gate valve comprising a gate cavity which communicates with both the first branch and the second branch; a g... | 09/13/2005 |
| 6664572 | Valve seal assemblies and methods Valve sealing assemblies and methods of sealing a valve engaging member to a valve body. A first seat member is fixedly disposed within a valve body pocket. Two seal rings are disposed between a valve pocket and a pocket insert and a seal ring is disposed... | 12/16/2003 |
| 6536740 | Disconnected piston for a valve actuator A valve and valve actuator utilizing a disconnected piston design that separates under conditions of excessive actuator internal pressure to prevent overloading and damaging the threaded connection between the valve stem and actuator piston is disclosed. ... | 03/25/2003 |
| 6530557 | Water sentry drive unit The present invention discloses a motorized drive unit for operating a valve including a gear, a motor, a chain coupling the gear and motor, a housing encasing the motor, gear, and chain, and a rotation limiting piece. Additionally, the present invention ... | 03/11/2003 |
| 6517049 | Method and valve for controlling fluid flow, and method of servicing valve A gate valve for controlling fluid flow through a housing is disclosed. The gate valve includes a frusto-conical shaped internal cavity having a fluid inlet and a fluid outlet formed in the wall thereof. Fluid flow through the cavity (from inlet to outlet... | 02/11/2003 |
| 6470907 | Existing pipe cut-off method, existing pipe slitting method, piping structure, and valve insertion method for inserting a valve in a line without stopping passage of water or fluid The invention relates to an existing pipe cut-off method and slitting method, by which an existing pipe made of cast iron and steel can be cut off. With a cut-off method according to the invention, first, a part of an existing pipe 1 is enclosed and seale... | 10/29/2002 |
| 6443426 | Slide lock for vacuum valve An improved slide lock mechanism for a vacuum valve (10) including an end plate or bonnet (42) mounted to an end flange (46) and a pair of slide lock plates (14). An elongated drive shaft pinion (36) drives a rack (52)connected to slide lock plates (14), ... | 09/03/2002 |
| 6360771 | Tapping sleeve with a mechanical joint adaptor A tapping adaptor assembly for direct connection to a gate valve. The assembly includes a tapping adaptor attached to a main pipe. An outlet conduit formed integrally with and extend outwardly from the tapping adaptor terminates in a distal end outlet. A ... | 03/26/2002 |
| 6354324 | Slide valve with welded internals A slide valve for control of product flow through it in which the valve internals are maintained in position by a stub welded to the orifice plate which in turn is welded to an internal end of the support cone and may be released and removed through the b... | 03/12/2002 |
| 6347919 | Wafer processing chamber having separable upper and lower halves A wafer processing apparatus includes a processing chamber having a top chamber portion and a bottom chamber portion, respectively. The apparatus further includes an annular ring valve associated with one of the top chamber portion and the bottom chamber ... | 02/19/2002 |
| 6325358 | Gate valve A gate valve is provided for granular or other dry materials which reduces the tendency of the valve to clog or jam during closing. The valve includes a slide having an arcuate-shaped forward end and a flared passageway to insure proper closing. The prefe... | 12/04/2001 |
| 6227234 | Tapping sleeve with a mechanical joint adaptor A tapping adaptor assembly for direct connection to a gate valve. The assembly includes a tapping adaptor attached to a main pipe. An outlet conduit formed integrally with and extend outwardly from the tapping adaptor terminates in a distal end outlet. A ... | 05/08/2001 |
| 6170521 | Shut-off device for conveyor conduits A shut-off device for selectively stopping the flow of conveyed loose bulk materials in a conveyor conduit includes a housing (2) with a flow passage (3) therethrough, and at least one shut-off element (4, 5) movably arranged in the housing. The at least ... | 01/09/2001 |
| 6050288 | Slide valve with welded internals Disclosed is a slide valve for control of product flow through it in which the valve internals, an orifice plate and guide assembly, are maintained in position by a circumferentially extending attachment stub surrounding and welded to a circumferentially ... | 04/18/2000 |
| 5967168 | Method of connecting branch pipe A method of connecting a branch pipe to an existing main pipe is disclosed. The method includes the steps of: connecting and communicating a branch-pipe joint having a branching pipe portion to an existing main pipe; connecting a branch pipe to the branch... | 10/19/1999 |
| 5938175 | Quick clean orifice gate A gate valve for controlling the flow of a material is provided which has first and second flange assemblies oriented adjacent to one another. Each of the flange assemblies has an opening through which the material can flow. A pair of load seals are place... | 08/17/1999 |
| 5913978 | Apparatus and method for regulating pressure in two chambers A gas is supplied to a second chamber so that the pressure in the second chamber is raised to a predetermined level. A communication passage is provided for internally connecting the first and second chambers. When the pressure in the first chamber attain... | 06/22/1999 |
| 5909867 | Closing assembly for a chamber having a through-opening A closing assembly for a chamber including, a housing-like member, a closing plate displaceable in the housing-like member for closing the chamber through-opening, and a drive unit for displacing the closing plate, with the housing-like member having two ... | 06/08/1999 |
