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| Number | Title | Issue Date |
| 8028719 | Control stop and flushing system A control stop for a flush valve for a urinal or toilet fixture includes a housing defining a flow chamber divided by a valve seat into inlet and outlet sections. A valve structure is biased toward the valve seat by a spring applying a valve closing spring force. Th... | 10/04/2011 |
| 7363941 | Fluid control valve device Certain embodiments of a fluid control valve include one or more ceramic components that operate substantially free of tensile stress concentrations along the control surfaces. In some embodiments, a fluid control valve includes a ceramic plug having a set of longit... | 04/29/2008 |
| 7347221 | Solenoid valve A valve assembly comprises two valves and a single solenoid actuator with only one magnetizing coil that controls both valves. The corresponding magnetic circuit comprises a yoke with only two pole pieces. The valves are arranged concentric to one another. The valve... | 03/25/2008 |
| 7331398 | Multi-drop flow control valve system A multi-drop flow control valve system having a plurality of hydraulically actuated flow control valve, each valve set in an initial operating position. The flow control valves are connected to a hydraulic control line in sequence, wherein the second flow control va... | 02/19/2008 |
| 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 |
| 7159616 | Dual path hydraulic coupling A female hydraulic coupling member is disclosed which comprises a first flow port; a second flow port; a third flow port in fluid communication with both the first flow port and the second flow port; a first poppet valve for opening and closing the first flow port; ... | 01/09/2007 |
| 7011110 | High capacity co-axial gas valve A high capacity coaxial gas valve assembly having a coaxial construction with three valves, in which the assembly opens a smaller second valve prior to opening a larger first valve so that the valve can be operated by a relatively smaller and less expensive coil. In... | 03/14/2006 |
| 6981688 | Flow control device A flow control device includes an opening part through which an upstream side of a fluid flow passage is in communication with a downstream side of the fluid flow passage. A valve element closes the opening part and includes a large flow rate controlling valve eleme... | 01/03/2006 |
| 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 |
| 6959726 | Valve assembly for attenuating bounce of hydraulically driven members of a machine A member that is driven by a hydraulic actuator tends oscillate when fluid flow to the hydraulic actuator is terminated. A pressure relief device reduces that oscillation by connecting first and second first relief valves to the hydraulic actuator. The first relief ... | 11/01/2005 |
| 6845786 | Spigot valve A spigot valve, which on opening and closing of the spigot valve, selectively moves a plunger member to selectively open and close a closure valve at the outlet of a container to which a spigot valve is connected. ... | 01/25/2005 |
| 6748977 | Valve A valve (1) for supplying fuel gas to a gas appliance comprises a valve housing (2) having a valve chamber (3) extending therethrough. Fuel gas is supplied through an inlet port (5) to the valve chamber (3) and from main and second... | 06/15/2004 |
| 6530391 | Temperature activated valve A temperature and pressure sensitive valve is disclosed herein. The valve has a valve piston for regulating flow through the valve, a valve piston guide for directing movement of the piston, the piston guide having one or more passages there through, a th... | 03/11/2003 |
| 6520157 | High-pressure injector with reduced leakage The invention relates to an injector for an injection system for injecting highly pressurized fuel into the combustion chambers of internal combustion engines. An inlet from the high-pressure accumulation chamber feeds into a control chamber that can be c... | 02/18/2003 |
| 6497244 | Fluid flow proportioning device A fluid flow proportioning device including spool type valve elements (12,14,16) opposite end portions of which reciprocate in oppositely disposed and spaced apart valve block halves (100,102). So that the fluids being proportioned can never mix within th... | 12/24/2002 |
| 6470914 | Switch device for gas burner A switch device for a gas burner includes a body engaged with a housing. The body defines an axial hole for rotatably receiving a driven shaft which has a first end secured in a rotation knob and a second end engaged with a barrel which can be rotated by ... | 10/29/2002 |
| 6328222 | Pulsed air assist valve module A fuel injector for use in a internal combustion engine is disclosed. The fuel injector includes a body having a discharge end and a longitudinal axis extending therethrough, and an electromagnetic coil located within the body. The fuel injector further i... | 12/11/2001 |
| 6296016 | Double obturator valve A valve, for example a tapered plug valve, having two obturators each rotatable between open and closed positions. The angle between the rotational axes is at least about 90° and may be 180°. The handles used to rotate the obturators are preferably on t... | 10/02/2001 |
| 6200111 | Controllable high volume positive displacement pump A controllable positive displacement pump for liquids and gases which may contain dispersed phase particles includes a pair of pistons operating out of phase. Each of the pistons is associated with an inlet valve which includes a fixed grating defining sl... | 03/13/2001 |
| 6192920 | Chain link float valve A valve for maintaining a given level of liquid in a tank, reservoir, or other container having a liquid-gas interface. Said valve being actuated by a float that rises and falls along with the liquid in the container. Said valve float actuates a series of... | 02/27/2001 |
| 6167869 | Fuel injector utilizing a multiple current level solenoid A fuel injector includes first and second valves and a solenoid including a solenoid coil and an armature assembly wherein the first and second valves are coupled to the armature assembly. A solenoid drive circuit is coupled to the solenoid coil and deliv... | 01/02/2001 |
| 6047718 | Solenoid valve having coaxial armatures in a single coil design A solenoid valve having a coil, a pair of armatures including an inner armature slidable within a coaxial outer armature and the outer armature slidable within the coil, and a pair of valves. One of the valves is at or near the end of the outer armature e... | 04/11/2000 |
| 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 |
| 5941280 | Pneumatically driven train brake pipe pressure exhaust valve A valve device for reducing the brake pipe pressure in a railroad train brake pipe at a location remote from a train locomotive including a pair of valves, a first valve to controllably vent brake pipe pressure from the brake pipe for purposes of service ... | 08/24/1999 |
| 5881768 | Combination motor/pneumatic driven train brake pipe pressure exhaust valve A valve device is used to reduce the air pressure in a brake pipe disposed on a railroad car in a train consist at a location in the train consist remote from the locomotive of the train consist. The valve device defines a primary supply passage, a branch... | 03/16/1999 |
| 5799698 | Switch for gas burner A switch for a gas burner includes a shaft and a rod engaged with the shaft so as to be rotated by the shaft. A cylindrical member has two depressions formed in one end for engaging with the rod. A disc is secured to a housing and has a recess communicati... | 09/01/1998 |
| 5704386 | Multistage regulating valve A multi-stage regulating valve is provided with a cylinder and an adjusting piston guided inside it to which a regulating pressure can be applied from one side and a return force from the other. Depending on the regulating pressure, the piston keeps at le... | 01/06/1998 |
| 5662083 | Metering device for air assisted fuel injection In an engine air assisted fuel injection system, it is desirable to provide a first range of air flow during engine idle and at low loading conditions. At greater engine speeds and higher loading conditions, a substantially greater second range of air flo... | 09/02/1997 |
| 5518024 | Overfill prevention device for storage tanks An overfill prevention device for storage tanks includes an elongate tubular housing having a liquid flow passageway. A normally open main valve and a normally closed vapor retaining bleed valve are associated with the fluid passageway. Closure of the mai... | 05/21/1996 |
| 5293914 | Hydraulic control circuit for a delimbing apparatus A hydraulic control circuit for uniform controlled movement of stripping and guiding arms in a tree delimbing apparatus. A pair of flow divider combiner valves allow equal amounts of pressurized fluid to communicate with and actuate said cylinders. The pi... | 03/15/1994 |
| 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 |
| 4742851 | Dripless faucet for beverage containers A faucet for a liquid container includes a tubular housing which is mounted in an opening in the container and a tubular valve which is slidably mounted in the housing. The tubular housing includes open front and rear ends, and the valve extends forwardly... | 05/10/1988 |
| 4551072 | Fluid pressure operated actuator A fluid pressure operated actuator, for example for controlling operation of a pneumatically driven metering pump for liquids. In a specific embodiment, the actuator is a rotary actuator and includes a piston/cylinder unit coupled at one end to a rack and... | 11/05/1985 |
| 4438782 | Isolation steam valve with atmospheric vent and relief capability An isolation steam valve arrangement for use on the exhaust side of a steam urbine for directing exhaust steam therefrom to steam operated auxiliary equipment and for relieving or venting steam to the atmosphere. The valve arrangement includes a casing, or... | 03/27/1984 |
| 4437830 | Burner and pilot valve safety control system The movable elements of two normally closed valves are actuated by a thermal element responsive to ignition at a pilot burner supplied fuel through one of the valves. The two valve elements form a mechanical train from the thermal element which simultaneo... | 03/20/1984 |
| 4425930 | Fluid flow control apparatus and method Apparatus and a method for controlling the flow of a fluid to a fluid-actuated system. The system is controlled by a sensor which senses a variable characteristic of the system, such as the air temperature. The apparatus includes a pair of solenoid valves... | 01/17/1984 |
| 4349200 | Gas gun for ballistic testing A gas gun has a charge chamber, an inlet valve to admit a charge of compressed gas to the charge chamber and either a plane or rifled barrel which communicates at its breech end with the charge chamber via a rotary outlet valve. Preferably the inlet valve... | 09/14/1982 |
| 4305469 | Fire extinguishing system having a discharge valve and a distribution valve actuated by a pneumatic actuator A fire protection system including a discharge valve for discharging a pressurized extinguishing agent from a storage container into a distribution manifold. Discharge of the agent is induced by a pneumatic release mechanism that responds to the applicati... | 12/15/1981 |
| 4281685 | Electromagnetic locking type actuator An electromagnetic locking type actuator is constituted by a control member reciprocatable in a fluid passage to control the fluid pressure in the passage, an electromagnetic device for applying a first magnetomotive force to the control member, and a mag... | 08/04/1981 |
| 4276237 | Carburetor air control device A carburetor air control valve device which accurately meters air flow to each of the ports of a carburetor. A plurality of closure members of the poppet type are operated by expansion of a bellows member, as the bellows member expands in response to chan... | 06/30/1981 |
