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| Number | Title | Issue Date |
| 8113484 | High temperature ball valve seal A high temperature ball valve seal is disclosed that achieves Class IV shutoff for operating temperatures above 550 degrees F. The ball valve seal includes a C-seal positioned between a main seal and a seal housing to prevent fluid from flowing through a secondary f... | 02/14/2012 |
| 7325616 | System and method for completing multiple well intervals A system and method for completing a well with multiple zones of production includes a casing having a plurality of flapper valves integrated therein for isolating each well zone and a perforating gun string for selectively perforating the casing and underlying form... | 02/05/2008 |
| 7243901 | Rotary valve apparatus and associated methods A rotary valve is provided with an elliptical valve disc that seats against a seal element operatively mounted in an elliptically shaped depression formed in the rigid annular portion of a seal cartridge structure carried by the valve body. Due to the elliptical sha... | 07/17/2007 |
| 7243900 | Ball valve A ball valve for refrigerating system includes a valve body, a valve seat that fits into the valve body by a screw thread, a valve ball accommodated within the valve body, two plastic sealing elements on both sides of the valve ball, a valve rod connected to the val... | 07/17/2007 |
| 7174918 | Air flow control valve for vehicle air conditioning module A novel air flow control valve for an air outlet in an HVAC housing provides for strong, even seal pressure all the way around the edge of the opening. In stead of a swinging door hinged at one edge of the opening, in which seal pressure is strong on the hinge edge ... | 02/13/2007 |
| 7143786 | Two-handle flow-through valve A flow-through valve is provided and includes a housing connecting first and second ends to allow fluid flow from the first end to the second end. The first end includes first and second inlet ports, while the second end portion includes an outlet port. The flow-thr... | 12/05/2006 |
| 7090153 | Flow conditioning system and method for fluid jetting tools According to one embodiment of the invention, a flow conditioning system for fluid jetting tools includes a housing having a plurality of jet nozzle openings and a fluid straightener disposed within the housing. The fluid straightener is defined by one or more vanes... | 08/15/2006 |
| 6951331 | Sleeve valve for controlling fluid flow between a hydrocarbon reservoir and tubing in a well and method for the assembly of a sleeve valve A sleeve valve for fluid flow between a hydrocarbon reservoir and a well includes a first sleeve and a second sleeve which are relatively movable between a first position in which at least one opening in the first sleeve is aligned or misaligned with at least one op... | 10/04/2005 |
| 6612542 | Motor operated butterfly valve A motor operated butterfly valve arrangement, at least one valve element of which is to be brought into a proper extreme position such that water leakage or the like does not occur within the pipe controlled by the valve element, without the necessity to ... | 09/02/2003 |
| 6499720 | Fireproof structure of a ball valve A ball valve includes a valve body and an urging member. The valve body is formed of a valve block, and two leakproof rings. The urging member is formed of a movable block, a locating element, and an elastic element located by the locating element. The mo... | 12/31/2002 |
| 6488261 | Ball valve A ball valve includes a valve body, a cap, a disk spring, a driven member, and a spherical body. The disk spring and the driven member are disposed in the cap such that the driven member is urged by the disk spring to displace, thereby causing the driven ... | 12/03/2002 |
| 6305462 | Door mechanism of automobile air conditioner A mix door (5) is arranged in air passages (10, 11) of an automotive air conditioning device. The mix door (5) is arranged to extend in a direction to shut an air flow blown from the upstream air passage (10) and swelled in a downstream direction with a p... | 10/23/2001 |
| 6193213 | Variable pressure loading system utilizing combined spring and fluid pressure A variable load mechanism for use in a valve seals the flow of a switched fluid. The flow passes through the mechanism in a region which includes shear seal surfaces. The lives of the components of the valve are extended by limiting the range of excursion... | 02/27/2001 |
| 5839426 | Gas distribution box to stove burners A gas distribution box for the top burners of a stove includes a sealed gas distribution conduit in the form of a channel formed between a base plate and a cover plate. Inside the palates are elements which control the flow of gas to each burner. Only the... | 11/24/1998 |
| 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 |
| 5727596 | Changeover valve A changeover valve which accommodates thermal transients and is operable over a range of temperatures includes a crossover member (20) and a seat assembly (30) in each outlet passage (15), a thrust bearing (45) rotatably supporting the crossover member an... | 03/17/1998 |
| 5277098 | On-off valve for hydraulic rockdrill An on-off valve is provided for a rockdrill which is operable by a hydraulic fluid under pressure and which is controlled by a hydraulically biassed valve. The rockdrill is turned on and off by opening and closing the on-off valve. When the valve is turne... | 01/11/1994 |
| 5257720 | Gasoline blending and dispensing system A gasoline blending and dispensing system delivers a predetermined blend of low and high octane gasoline from low and high octane gasoline supply tanks to a nozzle for dispensing from the system. The system includes a valve responsive to valve control sig... | 11/02/1993 |
| 5197514 | Flow distributor A distributor body comprises in its contact surface connection grooves which can communicate in different ways, according to the angular position of the body, with intake and outlet conduits. Rotation of the body is controlled by a motor. A stack of elast... | 03/30/1993 |
| 5069240 | Flexible seating structure for rotary valves A flexible seating apparatus is disclosed for use in rotary valves comprising a flexible seat ring attached to one of the valve body and valve closure member in a cantilevered fashion and maintained thereagainst by a resilient member, the latter being hel... | 12/03/1991 |
| 5044605 | Flow-control and shutoff valve A valve comprises a housing forming a compartment traversed by an axis and having a radially opening outlet port and an axially open inlet port, a valve plate fixed in the housing and formed relative to a flow direction therethrough with a flat upstream f... | 09/03/1991 |
| 5014736 | Shut-off and control valve A shut-off valve mechanism for a shut-off and control valve has a generally cylindrical housing with inner and outer annular shoulder against which a valve seat disk is placed to prevent distortion of the valve seat disk. The valve control disk is pressed... | 05/14/1991 |
| 5009392 | Rotary air valve A rotary air valve for a motor vehicle air conditioning, heating and ventilation system has a spring biased floating valve mounted on a rotary valve frame. The floating valve is spring biased radially outward against the interior of the case so that arcua... | 04/23/1991 |
| 4948095 | Shut-off valve A plastic spring loaded shut-off valve for drains in live wells of boats seals without the presence of fluid pressure. This effect is achieved by a biasing spring urging sealing flaps against the valve ports. The flaps are curved and have ribbed edges to ... | 08/14/1990 |
| 4928922 | Butterfly discharge valve assembly for a liquid bulk container A butterfly valve assembly for use in connection with liquid bulk containers. An annular discharge passage houses an annular valve member moveable within the discharge passage between open and closed positions. An annular groove in close proximity to the ... | 05/29/1990 |
| 4922960 | Self venting drain valve A self venting drain valve (10) for a fuel filter/water separator unit or other air tight fluid container is disclosed. The valve includes a arcuately elongated fluid hole (18) and a vent hole (20) in a lower wall (12) of the unit. A cylindrical movable m... | 05/08/1990 |
| 4921015 | Rotary vacuum valve Indexing rotary vacuum valve in which second stage vacuum at torr pi is applied through aligned ports of one valve member juxtaposed to another, originating a force tending to bring the two tightly together, but wet lubrication is not needed si... | 05/01/1990 |
| 4899984 | Obturator ring for butterfly valve Disclosed is an obturator ring for valves of the butterfly valve type which has, mounted in a groove made on the periphery of the flap, a split ring-shaped seal working with a first elastic member applying the seal against the valve body and a second elas... | 02/13/1990 |
| 4865071 | Flow valve A flow valve comprising two valve members having contacting flat surfaces, one of the members containing spaced inlet and outlet fluid passages and the other of the valve members containing an intermediate passage, the valve members being mounted such tha... | 09/12/1989 |
| 4860994 | Seal system for butterfly valve A seal system for butterfly valves of concentric- or eccentric valve body closure, which comprises a circumferential receptacle groove formed around the circumference of the valve body; a seal metal extending over the circumference of the valve body and h... | 08/29/1989 |
| 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 |
| 4822000 | Eccentric segmented ball valves A segmented ball valve has a rotatably mounted segmented ball valve element positioned to rotate eccentrically in a valve body with respect to three valve body sealing elements about the sealing opening for the valve body. The sealing elements include a c... | 04/18/1989 |
| 4674537 | Straight-way & shut-off valve The present invention is directed to a straight-way and shut-off valve in which identical discs are arranged in face-to-face contact to provide a fluid-tight seal therebetween and means are provided whereby fluid is not trapped between the central rotatab... | 06/23/1987 |
| 4641685 | Axially symmetric valve assembly A valve assembly for insertion into a valve body. The valve assembly includes a valve insert adapted to be positioned axially within the valve body. The valve insert has a longitudinally extending fluid passageway therethrough including an inlet opening a... | 02/10/1987 |
| 4632360 | Butterfly type valve seal A pivotally adjustable valve disc has a ring seal set in its grooved periphery for contact with a wall of a valve accomodating bore. A flexible, radially expansible member is in the valve groove in a backing relation to the ring seal. Passages admit press... | 12/30/1986 |
| 4606368 | Ball valve for pipeline A ball valve assembly comprising: a body providing a socket and flow ports communicating therewith; and a core unit comprising a core assembly adapted to be releasably inserted into said socket, the core assembly having a through passage arranged to commu... | 08/19/1986 |
| 4549579 | Straight-way valve A straight-way valve assembly is provided with regulating elements in the form of discs, of which one is rotatably-mounted and includes flow ports, which correspond to flow ports of the other static discs, which static discs are arranged on opposite faces... | 10/29/1985 |
| 4545408 | Seal for a rotary hydraulic valve Disclosed is a seal for a rotary hydraulic valve having an inner surface which is concave and spaced from the recess in the rotary core in which it is received. Two parallel troughs are formed in the inner surface between the edges thereof and the central... | 10/08/1985 |
| 4501297 | Rotary valve A rotary valve includes a rotor having at least one internal flow passageway therein extending between ports for providing communication between various pairs of flow passageways in the body of the valve. The rotor includes an annular surface for sealing ... | 02/26/1985 |
| 4470431 | Syringe valve and clamping mechanism A syringe valve and clamping mechanism for an automated liquid dispenser using a demountable precision metering syringe for automatically dispensing reagents or diluting samples with reagent.... | 09/11/1984 |
