Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7392971 | Infinitely variable directional valve Disclosed is an infinitely variable directional valve comprising a seat slide on which a valve cone is formed which is prestressed counter to a valve seat in the initial position of the directional valve. The directional valve is configured with a pilot control devi... | 07/01/2008 |
| 7367543 | Solenoid valve for fluid flow A solenoid valve is provided that comprises a valve body having an inlet and an outlet, and a movable member for moving a valve element away from a valve seat to open the valve. The moveable member engages and moves the valve element away from the seat to an open po... | 05/06/2008 |
| 7334600 | Priming apparatus for a centrifugal pump A vacuum assisted priming system for a fluid pump including a housing defining a hopper that communicates with a pump inlet. The housing mounts a first port that communicates with the source of vacuum and a second port that communicates with atmosphere. A check valv... | 02/26/2008 |
| 7293578 | Gauge assembly having a stop fill device A gauge assembly includes an indicator for providing an indication of an amount of fluid in a tank and a stop-fill assembly for stopping the flow of fluid flowing into the tank once the fluid reaches a particular level. The gauge assembly has a shaft that rotates as... | 11/13/2007 |
| 7270142 | Inflation device with automatic disconnect An apparatus that injects fluid into an inflatable device, dynamically monitors the pressure inside the device, and automatically terminates the inflation and disconnects from the inflatable device when the pressure inside the device reaches a predetermined value pr... | 09/18/2007 |
| 7204315 | Dual valve well control in underbalanced wells A method of isolating a reservoir of production fluid in a formation comprises providing a pair of valves (14, 16) in a bore intersecting a production formation and in which the hydrostatic pressuer in the bore at the formation is normally lower than the form... | 04/17/2007 |
| 7178553 | Leak-resistant solenoid valves A leak resistant solenoid valve comprises a valve body having an interior chamber, an inlet, an outlet, and at least one valve seat and valve plug located in the interior chamber. The valve plug has a sealing surface and is axially movable between open and closed po... | 02/20/2007 |
| 7108013 | Relief valve assembly A relief valve assembly is disclosed to include a casing, an one-way valve mounted in the fluid input end of the casing for guiding in a fluid, and a relief control valve installed in the casing between the fluid input end and fluid output end and controllable to re... | 09/19/2006 |
| 7093607 | Methods and apparatus for maintaining pressure gain in a servovalve assembly A servovalve has a sleeve having both a first metering aperture and a second metering aperture in fluid communication with a single port cavity defined by the servovalve. A spool oriented within the sleeve has a first land and a second land and defines a channel ori... | 08/22/2006 |
| 6974120 | Solenoid fuel drain valve A solenoid fuel drain valve (2) comprising a valve body (4), having a drain hole (20) and an air inlet opening (22), a solenoid coil (10) and a piston, the drain hole (20) having a drain inlet (20) and a drain outlet ... | 12/13/2005 |
| 6612338 | Fuel tank pressure control valve A valve structure that comprises a housing and a valve. The housing includes a first fluid communication passage between a first port and a second port. The valve is movable with respect to the housing between a first configuration, a second configuration... | 09/02/2003 |
| 6571829 | Gas control valve in water heater A gas control valve in a water heater is provided for improving the ease of assembling, minimizing the size and the cost, and decreasing the limitation of layout design. For example, in a flame-retention, storage type closed vessel gas water heater for au... | 06/03/2003 |
| 6029705 | Gas control valve A gas control valve is disclosed which enables a variable adjustment of the gas flows. Furthermore, a remote control may be utilized in conjunction with the gas control valve. The manufacturing expense and the size is kept at the lowest possible minimum. ... | 02/29/2000 |
| 4794953 | Torch device with oxygen and combustion gas supply A torch device with a torch body having separate ducts for oxygen and combustion gas supply is disclosed, wherein regulating and shut-off valves are provided in the torch body in substantially opposite relationship. A common actuating device for the shut-... | 01/03/1989 |
| 4759502 | Spray gun with reversible air/fluid timing An air assisted hydraulic atomizing spray gun for liquid coating materials is characterized by an adjustable air/fluid turn on timing sequence which allows the air to be selectively turned on before, at the same time as, or after the fluid.... | 07/26/1988 |
| 4749036 | Dual bore well treating tool A dual bore well treating tool having a pressure operated valve therein that is useful in conjunction with a dual bore packer and with a dual bore on and off or connection tool. One of the bores through the on/off tool, the treating tool and the packer is... | 06/07/1988 |
| 4729396 | Fuel control valve construction, parts therefor and methods of making the same A fuel control valve construction, parts therefor and methods of making the same are provided, the construction comprising a housing having an inlet adapted to be interconnected to a fuel source and an outlet adapted to be interconnected to a main burner,... | 03/08/1988 |
| 4557463 | Erosion resistant soft seated valve trim The disclosure is related to a high pressure fluid control valve including a valve seat made from a resilient, deformable material and a main valve plug which is matable with the resilient, deformable valve seat. A selectively, axially displaceable valve ... | 12/10/1985 |
| 4456032 | Fluid admission valve structure In an admission valve structure for a turbine all of the valves except the first opening one are spring biased closed, when seated. Because of the sequential opening of the valves, the valve closing bias of each spring acts as an opening bias relative to ... | 06/26/1984 |
| 4454783 | Diesel engine control linkage A control linkage for a diesel engine in a skid-steer loader is disclosed wherein the control rods for both the fuel shut-off valve and the rate of flow control valve are operably interconnected by a bracket slidably receiving the control rods. The bracke... | 06/19/1984 |
| 4318381 | Air bleed control system improvment A control system (1) for bleeding air into the high speed and low speed fuel circuits (HS and LS) of a carburetor (C) mounted on an internal combustion engine (E). The carburetor has an air passage (AP) to which fuel is delivered to mix with air and form ... | 03/09/1982 |
| 4297909 | Transmission shift control linkage for controlling both speed and direction changes with one input motion A shift control linkage for a hydraulically controlled transmission includes a pivotally mounted input member coupled to a direction (forward, neutral and reverse) control valve spool and a speed (first, second, third, etc.) control valve spool by first a... | 11/03/1981 |
| 4266574 | Vent valve A system for filling and emptying a fluid storage tank includes an air pressure source 11, a vent valve 12, and a fill valve 14. The vent valve 12 includes first and second housing portions 23 and 24 and a main valve member 18. A coil spring 20 acts betwe... | 05/12/1981 |
| 4244398 | Check valve assembly having valve opening prior to passing flow and flow shut off prior to valve closing A check valve assembly which when opening has a valve closure which is lifted from its seat before fluid flows past the unseated closure, and which when closing terminates flow in advance of the closure reengaging its seat.... | 01/13/1981 |
| 4236518 | Cryogenic device selectively operable in a continuous freezing mode, a continuous thawing mode or a combination thereof A cryogenic device utilizing pressurized coolant gas and provided with a single control easily manipulatable by finger pressure to selectively furnish either continuous freezing or continuous thawing, each alone or in sequence. The expansion chamber is pr... | 12/02/1980 |
| 4227548 | Multiple control valve for mixing fluids A mixing valve particularly suited for use as a water faucet includes separate finger-operated lever controls for selectively delivering an unmixed flow of cold water, an unmixed flow of hot water, and one or more mixed flows of intermediate temperature w... | 10/14/1980 |
| 4162795 | Sealing device for openings of a container which can be loaded with and emptied of batches of fluid loose material, viscous deposits, sludges or the like A sealing device for an opening in the wall of a container which is loaded with or emptied of fluid loose material, viscous deposits, sludges or the like and which after the loading or the emptying is sealed tightly and has a sealing element which is brou... | 07/31/1979 |
| 4120317 | Anti-lock vehicle brake systems A solenoid valve mechanism includes a cooperating poppet and valve seat and a first bias spring for urging the poppet into sealing engagement with the valve seat. A solenoid armature carries the poppet and includes means for selectively urging the poppet ... | 10/17/1978 |
| 4096784 | Hydraulic power system An hydraulic power system comprising a dual acting work piston adapted to be operatively connected to an external mass to be moved, the piston being instantly directionally responsive to a pair of control valves adapted to be sequentially opened and close... | 06/27/1978 |
| 4093048 | Vehicle steering brake and clutch control A crawler tractor vehicle having steering clutches and associated steering brake includes a control apparatus for each clutch and brake system, including a valve made up of a valve body, and a clutch valving spool and a brake valving spool movably associa... | 06/06/1978 |
| 4011889 | Piston valve A valve having separate closures for its inlet and its outlet respectively comprises a housing having the inlet in an elongated tubular wall and the outlet at an annular valve seat. A piston constituting one closure is movable coaxially within said wall s... | 03/15/1977 |
| 3971415 | Throttle valve A throttle valve having a valve seat element with a coaxial jacket which a plurality of flow-through channels positioned at different planes, and a piston-like locking member is stroke displaceably disposed within the jacket and having a sealing face at... | 07/27/1976 |
| 3958597 | Throttle control for remote air driven devices A throttle control that provides accurate and reliable control for a plurty of remote air driven devices. The throttle control employs a plurality of primary valves that are built into a common body with a handle and a plurality of operating levers. The ... | 05/25/1976 |
