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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7954785 | Hydraulic slide valve provided with a piezoelectric washer The invention relates to a hydraulic slide valve for controlling flow-rate or pressure comprising at least one movable valve moving from a closed position by contacting a seat and an open position remote therefrom, the displacement of said valve being controlled by ... | 06/07/2011 |
| 7201359 | Manual pressing device for a flusher A manual pressing device for a flusher includes a stop ring, a pressing rod unit, a spring, and a nut. The manual-pressing device is located in a lateral hole of the body of a flusher, normally stopping water in the flusher or pressed to connect a lengthwise hole in... | 04/10/2007 |
| 7159613 | Pressure limiting valve in a hydraulic machine having a pressure limiting valve In the housing 1 of a hydraulic machine, the pressure Pi acts in the chamber 2. For this purpose, a passage opening 4 is provided, which is formed as a valve seat 5. A valve body 6 can be displaced longitudinally in the housing ... | 01/09/2007 |
| 7051746 | Valve having pressure balancing piston and method involving same A valve assembly is disclosed that provides for complete or partial fluid pressure balancing across the valve, and can be used for reducing valve actuation forces in order to employ electric actuation. The valve assembly includes a valve housing having a valve chamb... | 05/30/2006 |
| 6978798 | Gas flow control An approach for gas flow control is achieved with an arrangement involving a sealed housing with relatively few components. According to an example embodiment, a gas flow controller comprises a gas inlet, a gas outlet, and an auxiliary chamber including a partition ... | 12/27/2005 |
| 6934976 | Toilet flusher with novel valves and controls A tank-type flusher includes an intake valve, i.e., a fill valve, a diaphragm-operated flush valve, and a pressure control mechanism. The intake valve is connected to an external water source and is constructed to close water flow to a water storage tank at about a ... | 08/30/2005 |
| 6779496 | Pressure reservoir for exerting pressure on a hydraulic system, with which preferably a gas exchange valve of an internal combustion engine is actuated A pressure reservoir is used to exert pressure on a hydraulic system with which, a gas exchange valve, for instance, of an internal combustion engine can be actuated. The pressure reservoir includes a housing and a piston that is prestressed in operation by a device... | 08/24/2004 |
| 6616118 | Lip seal for piston-type flushometer A piston assembly for use in a flush valve. The piston assembly is movable in the body toward and away from the valve seat to control flow from the inlet through the outlet. There is a relief valve in the piston assembly for venting a flush valve pressure... | 09/09/2003 |
| 6508231 | Common-rail-integrated injector for injection systems The invention relates to an injector for delivering fuel to a combustion chamber of direct-injection internal combustion engines, having a high-pressure connection chamber. A control part closes or opens a valve chamber from which a nozzle inlet line bran... | 01/21/2003 |
| 6443420 | Wide-ranging valve The solenoid valve has two fluidic connections (3, 4), a solenoid (5) and a core (8) guided in a cylinder (7) within the solenoid body (6). The solenoid valve (1) is opened as a result of the movement of the core (8) when the solenoid (5) becomes magnetiz... | 09/03/2002 |
| 6409142 | Pipe breakage control valve device An input/output port 1 of a hose rupture control valve unit 100 is attached to a bottom port of a hydraulic cylinder 102, and an input/output port 2 is connected to one of actuator ports of a control valve 103 via an actuator line 105. The valve unit comp... | 06/25/2002 |
| 6267349 | Precision valve control A precision valve control for an hermetically sealed hydraulic valve system which operates with a solenoid driven magnetic actuator. The magnetic actuator forms a toroidal magnetic force field of varying strength which causes controlled movement of a core... | 07/31/2001 |
| 6241212 | Hose rupture control valve unit A hose rupture control valve unit includes a housing provided with two input/output ports. One input/output port is directly attached to a bottom port of a hydraulic cylinder, and the other input/output port is connected to one of actuator ports of a cont... | 06/05/2001 |
| 6241211 | Plate valve The invention relates to a plate valve (1) as used for the actuator of a control valve. It comprises an inlet (2) with a sealing seat (3) around which the openings of the outlet (7) are arranged, and it has two plates (4), (5), between which there is an i... | 06/05/2001 |
| 6164906 | Regulating valve for engines operated by a medium under pressure A regulating valve for engines operated by a medium under pressure, in particular compressed air operated engines, in order to regulate the flow of compressed air to the engine to provide a substantially constant revolution rate at varying load, the regul... | 12/26/2000 |
| 6089528 | Poppet valve control with sealing element providing improved load drift control A control for a poppet valve providing improved load drift control is disclosed. The control includes a valve member operably moveable between a closed position and a range of open positions for allowing flow from an associated poppet control chamber, and... | 07/18/2000 |
| 6076798 | Fluid actuating valve The present invention relates to a fluid actuating valve, wherein the valve body (1) comprises a longitudinal tubular body (11) and a transversal cylinder body (12), the longitudinal tubular body (11) defines a longitudinal fluid passage (113), and the tr... | 06/20/2000 |
| 6036167 | Solenoid-actuated control valve with mechanically coupled armature and spool valve Solenoid-actuated control valves having low hysteresis include an annular flux housing with an axial bore extending therethrough. A coil configured to generate a magnetic field is disposed within the flux housing. A magnetic pole piece is disposed within ... | 03/14/2000 |
| 6024114 | Solenoid pilot operated air activated piston driven double seat accumulator drain valve A drain valve has an inlet (36) for liquids and small solids, an accumulation chamber (37) and an outlet (17). The outlet has a seal (13) which is connected to an air-activated piston (12). The piston is in turn connected to a positive air pressure inlet ... | 02/15/2000 |
| 6021996 | Electromagnetically operable proportional pressure control valve An electromagnetically operable proportional pressure control device has a spool which is slidably housed in a cylindrical bore formed in a housing. A pressure chamber defined in the cylindrical bore communicates with an inlet port through a diametrically... | 02/08/2000 |
| 6017015 | Magnetically operated drain valve of an electrohydraulic lifting module In a magnetically operated drain valve of an electrohydraulic lifting mod comprising a closing element which in the closing direction is assigned to a main valve seat, a pilot valve which is actuable by the magnet and arranged in a control chamber of the... | 01/25/2000 |
| 5947441 | Two-way seat-type valve A two-way seat-type valve is provided, having a valve seat which is arranged between a first and a second connection, and having a closure element which co-operates with the valve seat, is arranged in a guide so as to be movable towards the valve seat or ... | 09/07/1999 |
| 5906352 | Cartridge check valve A two port cartridge valve comprises a valve sleeve with a two-step guide hole, a valve piston, which forms a closing element for a valve seat, and a piston shoulder, which divides the second step of the guide hole axially into an end-side first control c... | 05/25/1999 |
| 5873561 | Two-port cartridge seat valve A two-port cartridge type seat valve has a valve sleeve with a stepped guide bore for a poppet. The poppet includes a piston flange that divides the second step of the guide bore axially into an end-face first pilot chamber and an annular second pilot cha... | 02/23/1999 |
| 5848779 | Servomotor, particularly for a quick-action stop valve A controlling motor for moving a stem along an axis has a hydraulic actuator with a cylinder in which a piston that is frictionally linked to the stem is slidingly and sealingly mounted, as well as a compression spring that is frictionally linked to the s... | 12/15/1998 |
| 5842500 | Overfill preventing valve An overfill preventing valve (20) is adapted to be operatively interposed in a flow path between a fluid source (21) and a compressed fluid storage cylinder (22) to prevent the cylinder from being overly filled. The improved valve includes an elongated tu... | 12/01/1998 |
| 5842679 | Adjustable stroke solenoid operated cartridge valve A lower cost valve results from the use of a single machined part for a valve housing. The housing is made of a non-magnetic material which can be less expensive and eliminates the requirement for screens or filters in automotive applications. Providing a... | 12/01/1998 |
| 5725197 | Mains pressure flusher valve A mains pressure valve including a main chamber having an inlet chamber for fluid and an outlet for fluid, a non-return valve located downstream of the outlet and adapted to provide resistance to fluid flowing therethrough, a piston located in the main ch... | 03/10/1998 |
| 5645263 | Pilot valve for a flow amplyifying poppet valve A flow amplifying poppet valve has a main poppet for controlling fluid flow from an inlet port to an outlet port of a main fluid passage. The position of the main poppet is controlled by controlling the pressure in a first control chamber adjacent the mai... | 07/08/1997 |
| 5564673 | Pilot-operated hydraulic valve A pilot-operated hydraulic pressure relief valve (HV) includes a main valve element (5) which is biased into a closed position by a spring (6). A pilot valve (VV1) has an open condition and a closed condition. A relief device (EV) is actuatable by the pil... | 10/15/1996 |
| 5551664 | Pilot controlled valve for motor vehicle tank systems A pilot controlled valve for motor vehicle tank systems whose valve body consists of two parts (10, 12). In the first housing part (10) an inlet duct (14), an outlet duct (16), an annular valve seat (20) and an annular duct (18) surrounding the latter are... | 09/03/1996 |
| 5540258 | Holding check control valve A holding check control valve including a main valve, an assistant valve, a check valve installed in an actuator fluid passage provided at the main valve and provided with a spring chamber, the check valve being adapted to be switched between an opened st... | 07/30/1996 |
| 5533706 | Valve arrangement A valve arrangement includes a valve housing having a circular cylindrical portion in which is formed a valve chamber, a control valve and a valve member. The valve chamber has an inlet adapted to be connected to a pressure-medium source for allowing pres... | 07/09/1996 |
| 5447203 | Remotely actuated firefighting nozzle A firefighting nozzle includes a nozzle body having a having a centrally formed jet orifice at its outlet end. An annular fog spray opening concentrically surrounds the jet orifice. A jet control valve is provided for allowing selective variation of the d... | 09/05/1995 |
| 5435019 | Pressurized toilet flushing assembly A pressurized flushing assembly mounted in the tank of a toilet for providing a rapid and thorough flushing of the toilet bowl with a low volume of water. The assembly includes a water storage tank defining an outlet aperture communicating with the cister... | 07/25/1995 |
| 5395090 | Valve for high pressure fluid systems A valve for use in high pressure fluid systems includes means for moving a valve assembly between a position opening fluid flow through the valve and a position closing fluid flow through the valve. The valve is opened by the use of system pressure but wh... | 03/07/1995 |
| 5339857 | Media assisted valves A media assisted flow control valve having a main body provided with an inlet, and outlet, a chamber defining a flow passage connecting the inlet and the outlet, and a main valve seat around the flow passage, a main valve mounted in the chamber and having... | 08/23/1994 |
| 5303778 | On-off type sprinkler In an automatic turn-off sprinkler, water enters an inlet and passes through a hollow interior region to the outlet. A reciprocating spool in the hollow region normally blocks the outlet enabling incoming water to fill a chamber above the spool. The gap b... | 04/19/1994 |
| 5290007 | Control device for volume stream of hydraulic working medium A control device for a volume stream of a hydraulic working medium has a blocking valve having a seat valve body cooperating with a stationary main valve seat, a pre-control valve member arranged in the seat valve member and cooperating with a valve seat ... | 03/01/1994 |
| 5241988 | Quick opening and closing valve The quick opening and closing valve of the present invention has a main chamber. An inlet from a source of liquid and an outlet extends into the chamber adjacent to and at right angles to each other. A ball or other type of plunger chamber moves (a) from ... | 09/07/1993 |
