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| Number | Title | Issue Date |
| 8168136 | Fluid-conveying apparatus and method for conveying fluid by using the same A fluid-conveying apparatus conveys fluid using a channel for the fluid to flow. The apparatus includes a pressure-generating device for generating pressure for conveying the fluid, a plurality of processing areas for processing the fluid, a valve which is disposed ... | 05/01/2012 |
| 7434780 | Pilot-type two-port valve A pilot-type two-port valve is disclosed having a water hammer preventing mechanism, operative to prevent a water hammer during valve-closing operation, which includes a valve member operative to open or close a valve and a piston driven by pilot fluid for operating... | 10/14/2008 |
| 7409937 | Hydraulic control system for internal combustion engine A hydraulic control system for an internal combustion engine, includes a driven mechanism driven by hydraulic pressure fed through a flowing passage change-over valve. The flowing passage change-over valve includes a valve body formed with a plurality of ports which... | 08/12/2008 |
| 7390310 | Shunt valve locking mechanism A locking assembly is provided to simply and effectively prevent any unintentional adjustment of the adjustable valve mechanism in a fluid flow control device, without compromising the function of the device. The locking assembly generally includes at least one grip... | 06/24/2008 |
| 7370706 | Gas lift valve for high pressure operation A unique gas lift valve bellows assembly in which an internal piston incorporated within the bellows provides over travel prevention and over pressure protection during valve operation, independent of the set or operating gas pressures exerted on the gas lift valve.... | 05/13/2008 |
| 7228826 | Internal combustion engine valve seating velocity control The present disclosure provides an engine having a gas exchange valve and an actuator for the gas exchange valve, and also a method of reducing valve seating impact velocity. The actuator includes a body having a fluid inlet and a fluid outlet. A plunger is reciproc... | 06/12/2007 |
| 7204211 | Arrangement of an internal combustion engine poppet valve and an actuator therefor The present invention (with reference to FIG. 1) is an arrangement of an internal combustion engine poppet valve and a hydraulic actuator therefor comprising: an actuator housing (16); spring means (104,105) for biassing the poppet val... | 04/17/2007 |
| 7194991 | Variable valve actuator Actuators, and corresponding methods and systems for controlling such actuators, provide independent lift and timing control with minimum energy consumption. In an exemplary embodiment, an actuation cylinder in a housing defines a longitudinal axis and having first ... | 03/27/2007 |
| 7178489 | Variable valve system of internal combustion engine and hydraulic actuator In a hydraulic actuator comprising a hydraulic piston, a hydraulic cylinder and a hydraulic pressure source wherein said hydraulic piston has a larger area exposed to pressure on the side of the control chamber than on the side of oil supply chamber of said hydrauli... | 02/20/2007 |
| 7162982 | Hydraulic valve actuator for reciprocating engine A hydraulic valve actuator for reciprocating engine includes at least a hydraulic cylinder (3) for opening at least one valve (2) via at least one valve opening selector (11) with at least one hydraulic positive displacement pump (4) wher... | 01/16/2007 |
| 7156058 | Variable valve actuator Actuators, and corresponding methods and systems for controlling such actuators, provide independent lift and timing control with minimum energy consumption, while supplying sufficient supplemental energy to overcome friction. In an exemplary embodiment, an actuatio... | 01/02/2007 |
| 7134408 | Device for the control of gas exchange valves A device for controlling gas-exchange valves of an internal combustion engine is provided, which device has hydraulic valve actuators each allocated to one gas-exchange valve. Each valve actuator has an actuating piston acting on the gas-exchange valve, and two hydr... | 11/14/2006 |
| 7131628 | Vented MEMS structures and methods A vent connects a chamber to the external atmosphere surrounding a device to equalize pressure within the chamber. The vent has a size and shape to allow pressure equalization to occur outside a normal operating cycle of the chamber and controls the pressure to prev... | 11/07/2006 |
| 7091044 | Partial modulation via pulsed flow modulator for comprehensive two-dimensional liquid or gas chromatography This invention is a method and device for use with multi-dimensional chromatography that utilizes partial modulation. An analyte-bearing sample is subjected to a first dimension of chromatography. Thereafter the separated analyte-bearing sample is diluted with a mod... | 08/15/2006 |
| 7007642 | Hydraulic valve actuator for actuating a gas-exchange valve An hydraulic valve actuator for actuating a gas-exchange valve in a combustion cylinder of an internal combustion engine has an operating piston delimiting two pressure chambers, of which the lower pressure chamber acting in the valve-closing direction is permanentl... | 03/07/2006 |
| 6917858 | Fluid regulation Fluid regulation may be achieved by a process performed by a controller. The process may include regulating a first fluid with a fluid-driven fluid regulator, receiving a second fluid, receiving electric power generated using the second fluid, and controlling the fl... | 07/12/2005 |
| 6892683 | Electrohydraulic valve controller The invention relates to an electrohydraulic valve controller for controlling a gas exchange valve in internal combustion engines, having a hydraulically actuatable control valve including a control valve piston which can be acted upon, via electrically actuatable v... | 05/17/2005 |
| 6827050 | Fluid control valve actuating system A control system adapted to control an actuator between extended and retracted positions has a fluid control valve connected to the actuator a source of high pressure fluid and a reservoir. The fluid control valve is movable between a first position at which the act... | 12/07/2004 |
| 6763829 | Reliability-enhanced apparatus operation for re-breathing and methods of effecting same Methods and apparatus for enhancing reliability of, and monitoring, the operation of airway valves to enhance patient safety. Pneumatic control line pressure (positive or negative) for actuation of the airway valve may be specified at a given magnitude or within a s... | 07/20/2004 |
| 6722327 | Device and method for changing the relative rotational angle of a camshaft A device for an internal combustion engine includes a cell wheel and a blade wheel, which is mounted in the cell wheel so as to be relatively moveable and is actuated hydraulically by oil and via pressure chambers. The oil flows through axial lines into the pressure... | 04/20/2004 |
| 6684834 | DEVICE TO CHANGE THE TIMING OF GAS EXCHANGE VALVES IN AN INTERNAL COMBUSTION ENGINE, IN PARTICULAR A ROTATING PISTON POSITIONING DEVICE TO ADJUST THE ANGLE THAT A CAMSHAFT IS ROTATED RELATIVE TO A CRANKSHAFT A rotating piston positioning device to adjust the angle of rotation of a camshaft with respect to a crankshaft of an internal combustion engine. The device includes a drive member (5) that is driven by the crankshaft and a driven member (10) that is fixe... | 02/03/2004 |
| 6637390 | Apparatus and method for measuring cam phaser locking pin position A vane-type cam phaser wherein a realtime method of measuring the axial position of the phaser's locking pin is provided. A magnet is fixed to the nose portion of the locking pin. A Hall-effect sensor is attached to the stator of the phaser in proximity t... | 10/28/2003 |
| 6619248 | Device for altering the control timing of gas exchange valves of an internal combustion engine, especially an apparatus for hydraulic rotational angle adjustment of a camshaft relative to a crankshaft A device (1) for hydraulic rotational angle adjustment of a camshaft relative to a crankshaft of an internal combustion engine including a drive unit (4) connected with the crankshaft and an output unit (5) non-rotatably connected with the camshaft. The d... | 09/16/2003 |
| 6615778 | Apparatus and method for diagnosing variable valve timing apparatus In a variable valve timing apparatus for variably controlling the valve timing by changing a rotation phase of a camshaft with respect to a crankshaft, an abnormality diagnosis of the apparatus is performed on a condition that a change amount per unit tim... | 09/09/2003 |
| 6546950 | Lacquer bullet gun Gas entry valve A lacquer bullet gun gas entry valve, placed inside the lacquer bullet gun at an entrance of a conduit between an expansion chamber and a bullet chamber. The lacquer bullet gun gas entry valve comprises a valve body and a shutter. The valve body has a pas... | 04/15/2003 |
| 6516763 | Method of controlling a device that varies the valve control times an internal combustion engine, especially of a camshaft adjusting device with hydraulically releaseable start lock A method of actuating a device for varying the valve timing of an internal combustion engine without jamming of the locking element during starting of the internal combustion engine, the solenoid of the hydraulic valve is at first energized through a numb... | 02/11/2003 |
| 6513468 | Valve timing control system for internal combustion engine A valve timing control system for an internal combustion engine for preventing dispersion of a control amount and unexpected unlocking of a lock pin is provided. The valve timing control system is provided with actuators 15 and 16 connected to cam shafts ... | 02/04/2003 |
| 6510825 | Internal combustion engine for motor vehicles and the like An internal combustion engine comprising at least one intake valve and/or exhaust valve moving axially between a closed position and a position of maximum opening and means for moving the valves adapted to move, on command, this valve between the closed p... | 01/28/2003 |
| 6439233 | Tracheal stoma valve A tracheal stoma valve with a valve housing (2) has a pivotable valve flap (3), which is pivotable upon inhalation with an air stream of predeterminable strength into a position sealing off the open lumen (4) of the valve housing (2), and upon exhalation ... | 08/27/2002 |
| 6409967 | Valve obturator An obturator prevents the tips or flaps of a duck-bill valve from self-adhering during storage or during sterilization procedures. The obturator holds the tips apart until the end-user is ready to use the valve. The duck-bill valve is used as an air outle... | 06/25/2002 |
| 6398183 | Automatic shut-off device for a valve for compressed or liquefied gases The shut-off device is intended for refillable gas cylinders. In order to be sure that only authorized persons can refill the cylinder, the filling device comprises a non-return valve element (16) which prevents filling and which can only be neutralized u... | 06/04/2002 |
| 6371437 | Thermally operated valve for automatically modulating the flow of fluids and methods and tool for making the same A valve for automatically modulating a flow of a stream of fluid, the valve including a housing having a wall defining an interior cavity. The interior cavity is in fluid communication with the stream of fluid. A modulator is mounted within the interior c... | 04/16/2002 |
| 6131878 | Pneumatic linear drive for cryogenic control valves A control valve for controlling flow of fuel from a fuel tank to a rocket engine having a valve body longitudinally displaceable between open and closed positions of the control valve, a piston rod secured in the valve body, and a piston secured to the pi... | 10/17/2000 |
| 5685335 | Lamp processing machine A lamp processing machine for separating glass, powder and metal lamp components placed within the machine. The machine may include two generally cylindrical, concentrically mounted screens and a tube concentrically mounted between the screens. The screen... | 11/11/1997 |
| 5337797 | Hydrocarbon dispenser nozzle A system that provides assistance in opening the main valve in a hydrocarbon dispenser nozzle. The external control member for opening the main valve acts on a pilot valve of small flow section, with the main valve being opened by fluid pressure applied t... | 08/16/1994 |
| 4795129 | Normally closed fluid switching logic element A normally closed fluid switching logic element has a plurality of radial ports to a first chamber. A poppet, connected to a piston within the element, moves between an open position off its poppet seat and a closed position. In the open position another ... | 01/03/1989 |
| 4650154 | Blanking cover for pipe A blanking cover for a pipe comprises a plate able to close the pipe by tilting or rocking under the action of gravity, about a pivot pin to which it is fixed. A part is fixed to the pin, and an electromagnet able to retract the part and fixed to another ... | 03/17/1987 |
| 4625941 | Gas lift valve A pressure-operated valve is disclosed including a choke positioned between one or more inlet ports to the valve and a flow port within the valve defined by a seat to which a valve element may be sealed to close the valve. The choke includes one or more o... | 12/02/1986 |
| 4606384 | Gas supply device including a plurality of gas flasks inserted in a pressurized gas container A gas supply device contains a pressurized gas container having a plurality of inserted pressure-resistant gas flasks. The gas flasks are partially filled with liquid gas, such as carbon dioxide or nitrous oxide, before being inserted and are closed by an... | 08/19/1986 |
| 4589528 | Double-tube vibration damper In a double-tube vibration damper the working chamber adjacent the piston rod guide member is connected to the compensation chamber surrounding the cylinder through a by-pass valve. The by-pass valve is mounted in the cylinder or in a structural member st... | 05/20/1986 |
