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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 8051876 | Pressure limiting valve with a hydraulic seal ring The invention relates to a pressure limiting valve with a hydraulic seal ring (12), characterized in that the sealing element (6), for securing the flow gap (10) between the consumer connection (3) and the pressurized fluid outlet (4 | 11/08/2011 |
| 7870869 | Dome-loaded pressure regulators Dome-loaded pressure regulators are disclosed. An example pressure regulator includes a dome-loaded pressure regulating valve fluidly coupled to a pressure inlet, a pressure outlet, and a control pressure. The pressure regulating valve includes a piston, having a tr... | 01/18/2011 |
| 7828010 | Pressure regulator for a fuel supply unit and method for production of a pressure regulator Disclosed is a pressure regulator for a fuel supply unit of a motor vehicle and method for production of a pressure regulator. The pressure regulator comprises a valve for producing a joining of a connection to an outlet above a designated pressure in the connection... | 11/09/2010 |
| 7743787 | Mud saver valve with magnetic latching A mud saver valve for retaining drilling fluid in the Kelly of a rotary drilling rig for insertion into a Kelly sub with an enlarged opening inside having a valve and hollow piston closing the flow in a first position and having flow through when the hollow piston i... | 06/29/2010 |
| 7669610 | Dome-loaded pressure regulators Dome-loaded pressure regulators are disclosed. An example pressure regulator includes body having a pressure inlet and a pressure outlet. A piston is disposed in the body and fluidly coupled to the pressure inlet, the pressure outlet, and the pressure control inlet.... | 03/02/2010 |
| 7464722 | Fluid proportioning valve A fluid proportioning valve meters flow of pressurized inlet fluid in proportion to a pressure drop between the inlet and outlet of the valve. A pressure acutated, return biased poppet valve is actuated by the fluid above threshold fluid pressure to meter fluid to t... | 12/16/2008 |
| 7353842 | Air fitting with an integral check valve An air fitting with an integral check valve includes a housing having an inlet and at least one outlet, a passage extending between the inlet and the at least one outlet with a valve seat being formed in the passage adjacent the at least one outlet with a portion be... | 04/08/2008 |
| 7287545 | Sanitary check valve A check valve adapted for mounting between any flanges and specifically between sanitary flanges in a piping system, the check valve comprising a stationary portion and a flexible portion; the single-piece rigid stationary portion including and supporting a valve se... | 10/30/2007 |
| 7287546 | Simple structure of fuel pressure regulator designed to minimize pressure loss A fuel pressure regulator for use in internal combustion engines. The fuel pressure regulator includes a valve seat and a vale body disposed downstream of the valve seat and is designed to move the valve body away from the valve seat through the pressure of fuel app... | 10/30/2007 |
| 7258133 | Pressure reducing valve A pressure reducing valve comprises a valve support member provided with a water passage, a valve seat fitting on the portion of the valve support member primary side relative to the secondary side end of the water passage, a cup-shaped valve body fitting on the sec... | 08/21/2007 |
| 7231938 | Check valve for pump of electronically controlled brake system A check valve for a pump of an electronically controlled brake system includes a valve body provided with a fluid path, a spring seat placed in an outlet of the fluid path of the valve body, a valve rod fitted at a lower end thereof into an inlet of the fluid path o... | 06/19/2007 |
| 7219689 | Automatically flushing water regulator for animal watering systems A water pressure regulator for a watering system of an animal house is provided with a water inlet member comprising a watering path and a flush path. The watering path is operably engaged by the regulating valve. The inlet member is manually movable relative to the... | 05/22/2007 |
| 7201184 | Pressure protection valve A valve is provided having a housing with an inlet and an outlet. Within the confines of the housing is a fluid flow path that allows for fluid communication between the inlet and the outlet. The valve includes a valve element that is movable to and from a position ... | 04/10/2007 |
| 7201183 | Valve arrangement in a hydraulic circuit, use of the same and arrangement for controlling a hydraulic vehicle drive A valve arrangement in a hydraulic circuit comprises a longitudinal duct 3 and a transverse duct 2. A throttle slide 10 can be displaced in the direction of the longitudinal duct 3. Arranged in the throttle slide 10 is a valve pist... | 04/10/2007 |
| 7191795 | Venting valve having a cover cap A venting valve for a fuel vessel of a portable handheld work apparatus has a valve housing which includes a base body and a valve cover. A valve plate is mounted between the base body and the valve cover. The valve plate controls a pressure compensating channel con... | 03/20/2007 |
| 7188640 | Gas pressure regulator An improved pressure regulator suitable for use with paint ball guns comprises a hollow valve body, a valve mechanism for selectively releasing gas from a gas source to an output, and an ON-OFF control. The valve body has a coupling portion, a regulator seat, an out... | 03/13/2007 |
| 7159611 | Inline flow control device The inline flow control device includes housing with a tubular portion coaxially aligned with the tubular portion of a fitting threaded to the housing. A piston has a bore extending therethrough with the tubular portions extended thereinto in axial spaced relationsh... | 01/09/2007 |
| 7146997 | Regulator with flow diffuser A flow-through pressure regulator having a housing, and a divider. The housing includes an inlet and an outlet disposed along a longitudinal axis. The divider separates the housing into a first chamber and a second chamber, and includes a seat, a diaphragm, a retain... | 12/12/2006 |
| 7131457 | Flow-through pressure regulator including a perforated diaphragm-to-seat spring retainer A flow-through pressure regulator includes a retainer that secures a diaphragm relative to a seat, and includes a cylindrical portion, an axial end portion and an annular portion. The cylindrical portion extends about a longitudinal axis and is fixed with respect to... | 11/07/2006 |
| 7121298 | Reducer valve for pressurized gas A reducer valve for pressurized gas includes a piston (2) displaceably mounted in a valve housing (3) against the force of a pressure spring (8). At one end, the piston (2) is subjected to pressure by the back pressure via a control press... | 10/17/2006 |
| 7111638 | Excess flow shutoff A flexible connector incorporates an excess flow shutoff at its inlet to prevent uncontrolled flow in the event of a failure such as rupture or separation of the connector. A shutoff sleeve moves in a body between an upstream, open position and a downstream, closed ... | 09/26/2006 |
| 7111639 | Pressure regulator including a press-fit spring retainer A pressure regulator includes a housing, a divider including a first valve member, and a second valve member. The housing includes an inlet and an outlet, and defines an interior volume. The divider separates the interior volume into first and second chambers, and i... | 09/26/2006 |
| 7082956 | Regulator with flow distributor A flow-through pressure regulator having a housing, and a divider. The housing includes an inlet and an outlet disposed along a longitudinal axis. The divider separates the housing into a first chamber and a second chamber, and includes a seat, a diaphragm, a retain... | 08/01/2006 |
| 7077158 | Velocity head compensated valve assembly A valve assembly includes a valve body configured to define a chamber forming a primary flowpath between an inlet port and a discharge port, an isolator disposed inside said chamber, and a poppet having a bore. The isolator is defined by a skirt and a stem, with the... | 07/18/2006 |
| 7063104 | Flow-through pressure regulator including a closure member assembly integrated with a housing A flow-through pressure regulator includes a divider, a closure member and a housing. The divider separates a first chamber from a second chamber, and includes a passage that provides fluid communication between the first and second chambers. The closure member move... | 06/20/2006 |
| 7048000 | Pressure reducing valve A pressure reducing valve includes a housing having a passage therein, a valve body disposed within the passage, and a piston slideably disposed within the passage. The valve body includes a wall arranged transverse to the passage and dividing the passage into an in... | 05/23/2006 |
| 7048001 | Pressure regulator with single strut regulator seat A fluid pressure regulator comprising a tubular housing having a fluid inlet at one end thereof and a fluid outlet at an opposite end and a fluid passage therebetween; a tubular plunger mounted for reciprocal movement in the fluid passage, the plunger having a flow ... | 05/23/2006 |
| 7040292 | Device for damping vibrations on fuel injection systems having a high-pressure accumulating space The invention relates to a high-pressure accumulator for fuel injection systems, having a number of line connections corresponding to the number of chambers of an internal combustion engine. The accumulator has an essentially circular cross section delimited by an i... | 05/09/2006 |
| 7040344 | Pressure regulator including a fixed valve ball and method of assembling the same A pressure regulator includes a housing, a divider, and a valve. The housing includes an inlet and an outlet. The divider separates the housing into a first chamber and a second chamber. And the valve includes a spherical valve ball and a seat. The spherical valve b... | 05/09/2006 |
| 7040595 | Constant flow rate expansion valve A constant flow rate expansion valve includes a refrigerant passage having a fixed flow path cross-sectional area smaller than that of a refrigerant inlet, a differential pressure control valve for controlling the differential pressure (P1−P2) betwee... | 05/09/2006 |
| 7032272 | Friction hinge A motion control device for controlling the movement of an operational member about a first axis and about a second axis includes a spindle having a socket and a control arm wherein the socket defines a first axis opening. The device includes a cylindrical pivot mem... | 04/25/2006 |
| 7008198 | Cam operated pump having lost motion shuttle A peristaltic piston pump driven by a dedicated pump cam disposed on a camshaft of an engine. A plurality of valve-opening cams are disposed along the camshaft. The pump cam has a plurality of lobes equal in number to the number of valve cams and each pump lobe is d... | 03/07/2006 |
| 6988509 | Riser line shutoff valve The riser line shutoff valve where oxygen flows into the valve from the inlet and through an orifice in the piston. This orifice creates differential pressure between the upstream and downstream side of the piston. When the differential pressure across the piston ex... | 01/24/2006 |
| 6971402 | Liquid control valve In order to achieve an object to provide a liquid control valve of normally close valve type which has both of an outflow side pressure automatic regulating function and a water stop function, the liquid control valve has a pressure regulating piston which moves wit... | 12/06/2005 |
| 6945265 | Regulator with multiple flow diffusers A flow-through pressure regulator includes a retainer that secures a diaphragm relative to a seat, and includes an intermediate portion, an end portion and a base portion. The intermediate portion extends along a longitudinal axis and is fixed with respect to the se... | 09/20/2005 |
| 6932107 | Flow control valves In one embodiment, a flow control valve includes a valve body having an inlet, an outlet, a flow passageway coupling the inlet to the outlet, and a cavity with first and second chambers. The valve further includes a hollow piston disposed in the first chamber and a ... | 08/23/2005 |
| 6820643 | Liquid pressure regulator with built-in antidrainage valve A pressure regulator assembly includes an inlet portion having a passageway through which liquid passes through the assembly. The assembly includes a plunger movable within the housing to selectively engage the inlet portion or the housing to control the path of liq... | 11/23/2004 |
| 6796323 | Dual seat valve A dual seat valve which selectively supplies and releases fluid to and from a reservoir, such as a dome of a main valve in a pressure relief system. The valve comprises a housing with an interior chamber and an annular first seat surface. A valve assembly is configu... | 09/28/2004 |
| 6761185 | Constant gas flow regulating device A constant gas flow regulating device includes an inlet chamber, an outlet chamber and a movable wall that delimits the inlet and outlet chambers from each other. The moveable wall carrics a body comprising an opening that permits communication between the inlet and... | 07/13/2004 |
| 6748964 | Flow-through pressure regulator self-contained valve assembly The present invention provides a flow-through pressure regulator which is self-contained. The flow-through pressure regulator includes a housing having an inlet and an outlet offset along an axis. The housing is separated by a valve assembly into a first chamber and... | 06/15/2004 |
