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A portable partition for use in an automobile having a seat with a seat bench and a seat backrest.
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| Number | Title | Issue Date |
| 7249580 | Valve return device, and an engine equipped with such a device The invention relates to a return device for returning a valve of an internal combustion engine, the device comprising: a piston secured to said valve and mounted to slide in a cylinder; a pressurized fluid feed co... | 07/31/2007 |
| 7225771 | Method and device for pressure pulse generation A device for generating pressure pulses, includes a pressure fluid source and a pressure fluid depression, a pressure fluid circuit, a valve body displaceably located in a chamber, a first branch and a second branch the branches leaving to opposite sides of the valv... | 06/05/2007 |
| 7204212 | Camless engine hydraulic valve actuated system A method and apparatus for hydraulically actuating a gas exchange valve using a low-pressure, substantially constant flow fluid source applied to at least one actuator cylinder piston coupled to the gas exchange valve. The actuator piston slides within the actuator ... | 04/17/2007 |
| 7140332 | Pneumatically actuated valve for internal combustion engines A pneumatically actuated valve assembly for use as intake and/or exhaust valves on two- or four-stroke internal combustion engines. The assembly includes a valve (100), valve housing (200), and compressed gas distribution and timing mechanisms (FIGS. | 11/28/2006 |
| 7044433 | Valve spring mechanism A valve spring mechanism is provided which is suitable for use with the inlet or exhaust valves of an internal combustion engine, and includes a valve head and a valve stem. The mechanism includes a piston/cylinder arrangement in which the cylinder surrounds a porti... | 05/16/2006 |
| 6899068 | Hydraulic valve actuation system An engine valve actuation system may include an actuation assembly having a body, a slidable piston, and first, second, and third chambers defined between the piston and the body. Low pressure and high pressure fluid sources may be included. A first fluid passage ma... | 05/31/2005 |
| 6871618 | Valve actuating device, and method for controlling same A device and control method for actuating valves of a motor vehicle internal combustion engine including at least a controlled hydraulic actuator actuating the associated valve that is provided in the form of a cylinder. A mobile piston connected to the valve delimi... | 03/29/2005 |
| 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 |
| 6776129 | Hydraulic actuator for a gas exchange valve A hydraulic actuator for gas exchange valves of internal combustion engines is disclosed, in which the lifting of the gas exchange valve from the valve seat is effected with great force. The opening motion of the gas exchange valve then ensues at reduced force. Upon... | 08/17/2004 |
| 6755162 | Distributed accumulator for hydraulic camless valve actuation system A manifold is provided for housing high pressure oil on a camless engine. A body of the manifold has first, second and third channels formed therein lengthwise in the body. Switching valves on the body are operative to alternately communicate oil in the channels wit... | 06/29/2004 |
| 6752106 | Pressure pulse generator A pressure pulse generator comprising a circuit (12) filled with a pressure fluid, and at least one communication channel (15) that is connected to the circuit and via which the pressure fluid can flow into and out of the circuit. The pressure pulse ge... | 06/22/2004 |
| 6745738 | Pneumatic valve return spring A valve spring device using pressurized gas for use in biasing a reciprocating valve which moves between a seated position and open position. The device features a static housing having a static chamber what is translateably engaged with dynamic housing. Chambers in... | 06/08/2004 |
| 6715465 | Internal combustion engine with valve control An internal combustion engine includes at least one rotating, oscillating or reciprocating piston (20, 21) in a cylinder (11, 12). Each piston (20, 21) defines with the cylinder (11, 12) a combustion chamber (35). Each combustion c... | 04/06/2004 |
| 6619246 | Electromagnetic valve actuators A device for actuating a gas exchange valve of an internal combustion engine or gas generator comprises an armature which is operatively connected to the valve stem of a valve member and which is disposed in a chamber between opposed pole faces of a valve... | 09/16/2003 |
| 6615779 | Control of an electromagnetic steering valve of a camshaft phaser The movable valve apparatus includes the movable valve mechanism, the hydraulic pressure control valve, and the controller. The movable valve mechanism changes the opening/closing timing of an air intake or exhaust valve depending on the supplied hydrauli... | 09/09/2003 |
| 6553966 | Method of presetting an internal combustion engine In many cases, intake and/or exhaust valves and fuel injector plungers are desirably placed in a predetermined condition prior to starting the engine. In hydraulic systems, leakage and thermal contraction can lead to pressure loss during a period of non-o... | 04/29/2003 |
| 6536388 | Variable engine valve control system A valve control system for an internal combustion engine includes a housing comprising a cylinder defining a longitudinal axis, an exhaust port, a piston disposed in the cylinder and an engine valve operably connected to the piston. An exhaust member is d... | 03/25/2003 |
| 6534170 | Diamond-coated sliding part Provided is a diamond-coated sliding part that is light, has excellent abrasion resistance, that prevents abrasion of the material of an opposite member, and that is effective in reducing power loss. This sliding part is especially useful as an adjusting ... | 03/18/2003 |
| 6340009 | Internal combustion engine An internal combustion engine having at least one combustion chamber in which the chamber has at least two hydraulically or pneumatically actuatable valves that are each guided in a respective valve guide. The engine includes an inlet valve for admitting ... | 01/22/2002 |
| 6182620 | Internal combustion engine with electromagnetically actuated valves An internal combustion engine with electromagnetically actuated valves comprising a variable volume combustion chamber, at least one suction duct connecting the combustion chamber with the suction manifold of the engine and at least one exhaust duct conne... | 02/06/2001 |
| 6083140 | Pneumatic valve spring system having a single air compressor to also supply air actuated accessories An internal combustion engine having an engine camshaft driven air compressor. The air compressor supplies air under pressure through separate regulated and controlled circuits to air springs for urging the poppet valves of the engine to a closed position... | 07/04/2000 |
| 5988124 | Electromagnetically actuated cylinder valve having pneumatic resetting springs An apparatus for reciprocating an engine valve between open and closed positions in an internal-combustion engine includes an electromagnetic actuator having first and second mutually spaced electromagnets for generating electromagnetic forces; and an arm... | 11/23/1999 |
| 5943988 | Operating arrangement for a gas change valve of an internal engine combustion engine In an operating arrangement for a gas change valve of an internal combustion engine including an electromagnetic structure having an armature which is connected to the valve and which forms an operating piston disposed in a cylinder for reciprocating move... | 08/31/1999 |
| 5832885 | Hybrid internal combustion engine A method and apparatus for improving efficiency and reducing emissions of an internal combustion engine coupled to an inertial load. Means are provided for controlling the energy exchange between engine and load so that the maximum conversion efficiency i... | 11/10/1998 |
| 5752477 | Two-stroke engine with valve motion control means The present invention relates to a two-stroke engine comprising at least a cylinder (111) in which a piston (112) moves and one end of which communicates with a pump sump (115) crossed by the crankshaft (114) of the engine, a capacity under pressure (87) ... | 05/19/1998 |
| 5713315 | Multiple step valve opening control system A multiple step valve opening control system, particularly for an EGR control valve unit, having a plurality of valve lifts. The system comprises a valve member for opening a fluid passage in multiple steps, a first piston slidably housed in a housing, a ... | 02/03/1998 |
| 5664527 | Pneumatic valve recoil system for internal combustion engines A pneumatic valve recoil system includes a piston that is unitary with the stem of a valve and which slides in a cylinder, such that the piston, valve stem, and cylinder cooperate to form a chamber containing a compressible fluid. The chamber is connected... | 09/09/1997 |
| 5611303 | Valve operating apparatus of internal combustion engine A valve operating apparatus includes a biasing unit which applies a biasing force to a valve element so that the valve element is held at a neutral position. A first solenoid coil generates an electromagnetic force to move the valve element in a valve-clo... | 03/18/1997 |
| 5555859 | Internal combustion engines Internal combustion engines with a cylindrical working chamber (1) in which there slides a piston (3), and which is closed by a cylinder head (4) with a device (5) for injecting atomized liquid fuel under high pressure and operating on the two-stroke cycl... | 09/17/1996 |
| 5553572 | Multi-valve engine An improved air spring arrangement for an internal combustion engine having three valves per cylinder which are disposed in surrounding relationship to a spark plug. The air spring arrangement is formed by a recess formed in the cylinder head that encompa... | 09/10/1996 |
| 5363651 | Free piston internal combustion engine An improved internal combustion engine is disclosed having no rotating crank shaft. Each piston rod of the engine is connected to a hydraulic piston and cylinder the output of which drives the rotating output shaft of a hydraulic motor. A take off from th... | 11/15/1994 |
| 5277222 | Pressure actuatable valve assembly A bistable pneumatic valve assembly has a valve containing a flange and is adapted to be associated with a combustion chamber of an internal combustion engine. A control outlet opening of the valve assembly housing is opened for responsively causing the v... | 01/11/1994 |
| 5259345 | Pneumatically powered actuator with hydraulic latching An axially reciprocable working piston has opposed working surfaces facing opposed working chambers which are intermittently connected to respective cavities pressurized with compressed air. The working piston is connected to opposed seating pistons which... | 11/09/1993 |
| 5253619 | Hydraulically powered actuator with pneumatic spring and hydraulic latching A hydraulic actuator includes a pneumatic piston, a hydraulic piston, and an engine valve on a common shaft. The pneumatic piston is urged between first and second stable positions primarily by a double acting pneumatic spring, with high pressure hydrauli... | 10/19/1993 |
| 5233950 | Valve operating system for internal combustion engine A valve operating system in a multicylinder internal combustion engine, including an air pressure chamber biasing each engine valve in a closed direction thereof. The air pressure chambers are formed in a member positioned between the engine valves and th... | 08/10/1993 |
| 5193495 | Internal combustion engine valve control device The present invention is a valve control device (10) for an internal combustion engine (12). It comprises a housing (18) having a piston chamber (20), in which is mounted a power piston (22) for reciprocating movement. The power piston (22) is connected t... | 03/16/1993 |
| 5152260 | Highly efficient pneumatically powered hydraulically latched actuator A high efficient actuator used to operate an engine's poppet valves is disclosed. Pneumatic pressure is applied to an actuator piston which is locked in either a first or a second position by an interconnected fluid latch. Upon a timed command, the piston... | 10/06/1992 |
| 5109812 | Pneumatic preloaded actuator A two position straight line motion actuator utilizes a double ended pneumatic spring to provide most of the energy required to transit back and forth between the two positions. The actuator is held in its initial position against the force of the pneumat... | 05/05/1992 |
| 5022359 | Actuator with energy recovery return An electronically controlled actuator which compresses a fluid thereby storing potential energy as it transitions from a first to a second position is disclosed. The compressed fluid exerts a high force on the actuator and the potential energy is recovere... | 06/11/1991 |
| 5022358 | Low energy hydraulic actuator An electronically controllable hydraulically powered asymmetrical valve actuating mechanism for use in an internal combustion engine of the type having engine intake and exhaust valves with elongated valve stems is disclosed. The actuator is a bistable el... | 06/11/1991 |
