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| Number | Title | Issue Date |
| 7334603 | Check valve A check valve has an elastic valve body portion and an inelastic valve body portion and a valve seat. The valve body is fixed to a valve shaft, and a valve body abutment plate for abutting the elastic valve body portion is supported to the valve shaft. The valve bod... | 02/26/2008 |
| 7246787 | Solenoid valve assembly A valve assembly comprised of a solenoid coil, having a coil bore, and being operative to produce a magnetic field when subject to an electric signal, a fixed magnetic pole piece within the coil bore, a generally cylindrically and axially translatable armature with ... | 07/24/2007 |
| 7168446 | High impact discharge valve A check valve for use in a pump. The valve is arranged to be subjected to severe service conditions and high impact loads, yet be resistant to damage to its components. The check includes a body, a valve seat, a poppet and an impact cushion. The poppet is movably co... | 01/30/2007 |
| 6886586 | Symmetrical valve configuration A compression-type valve seating ring device for sealingly engaging the valve seat. The seating ring device includes a resilient cylindrical body having a central axis and having a side surface, a top surface and a bottom surface. A first inward bevel is defined cir... | 05/03/2005 |
| 6871668 | Variable force actuator with a double needle poppet assembly A variable force actuator with a double needle poppet assembly includes a housing in which a first poppet and a second poppet are slidably disposed. The second poppet fits within the first poppet, and both poppets move when a nearby coil is energized to establish, i... | 03/29/2005 |
| 4967786 | Armature for a solenoid operated valve A single, rectangular piece of sheet metal is rolled to form a tube having a split seam. A cylindrical piece of rubber is inserted in the cylinder with the ends of the rubber cylinder flush with the ends of the metal tube. The cylinder is squeezed or crim... | 11/06/1990 |
| 4936337 | Armature for a solenoid operated valve An armature for a solenoid operated valve in which a magnetically responsive tubular housing has a central aperture extending longitudinally therethrough. Secured within the aperture is a seal component with opposite ends positioned relative to the open e... | 06/26/1990 |
| 4872473 | Dual float valve control for regular and douglas type valve A reversible buoyant and non-buoyant flush tank valve is adapted for use in various types of flush tanks each having different selective valve operating attachments for moving the valve. The valve for use in one type of tank includes an elongated base wit... | 10/10/1989 |
| 4716924 | Valve assembly for reciprocating plunger pump A replaceable discharge valve assembly for a high pressure reciprocating plunger pump including a generally tubular valve seat member having respective cylindrical portions insertable in cooperating valve chamber portions formed in the pump cylinder block... | 01/05/1988 |
| 4641682 | Valve with rotary valve head A valve having a rotary valve head with an elastomeric seal attached to the valve head for use in a conduit is disclosed. Separate embodiments for use in a downhole tool and in an accessible surface valve are disclosed. An axially movable actuator tube is... | 02/10/1987 |
| 4545399 | Valve An improved valve for water faucets or the like. The valve has a stem with a locking surface at the lower end thereof, and a seal that has a coacting locking surface matingly engaging the stem locking surface. The locking surfaces are so formed that separ... | 10/08/1985 |
| 4520842 | High pressure valve for positive pressure pumps including means for installing and removing the valve A high pressure valve for a reciprocating pump including improved means of inserting and extracting the seat from the pump in which the pump has a seat deck of truncated conical configuration, the valve having a seat formed of a tubular element having a f... | 06/04/1985 |
| 4483363 | Compressor valve A compressor valve with annular valve members or rings instead of the usual spring-urged engagement of the rings with the valve seat, the rings are drawn into engagement with the seat by air or other gas passing through the valve in a direction reverse to... | 11/20/1984 |
| 4408629 | Valve modification for fluid pump valves Failure of a disc valve by abrasive wear caused by an abrasive fluid flowing through the valve is retarded by the provision of a resilient O-ring along the seating surface of the disc member. A second O-ring disposed within the central bore of the disc wh... | 10/11/1983 |
| 4337920 | Valve A valve for high temperature abrasive service having a body with an inlet connected to a valve chamber and an outlet extending through a valve seat from the valve chamber, a valve stem movable toward and away from the valve seat, a valve member mounted on... | 07/06/1982 |
| 4257442 | Choke for controlling the flow of drilling mud This apparatus disclosed in its preferred form is a choke for controlling the flow of drilling mud which is highly abrasive. The abrasive drilling mud is introduced through a lateral port and an elongate, tubular body. In the tubular body, a fluid actuate... | 03/24/1981 |
| 4190073 | Choke for controlling the flow of drilling mud This apparatus disclosed in its preferred form is a choke for controlling the flow of drilling mud which is highly abrasive. The abrasive drilling mud is introduced through a lateral port and an elongate tubular body. In the tubular body, a fluid actuated... | 02/26/1980 |
