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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 7395663 | System for and method of locking a roll suspension arrangement for a boom assembly mounted on an agricultural sprayer A system to lock a roll-suspension arrangement operatively connected to allow pivotal movement of a boom assembly about a fore-and-aft axis independent of a carrier frame is provided. The system includes an actuator cylinder having an end movable in a linear directi... | 07/08/2008 |
| 7357462 | Hydraulic brake system for a wind energy plant The hydraulic brake system comprises a piston/cylinder unit (14) for activating and releasing a brake (12), comprising a volume (16) adapted to have a pressurized working fluid supplied thereto for moving the piston (24) from a braking po... | 04/15/2008 |
| 7182310 | Position return device for an open and close apparatus A position return device for an open and close apparatus includes a casing base, a first actuating member, a second actuating member, a first end cover, a second end cover, an output shaft and a motor. The casing base has a main member with a hollow seat at the top ... | 02/27/2007 |
| 7089962 | Compensation device for compensating volumetric expansion of media, especially of a urea-water solution during freezing A compensation device for compensating a volumetric expansion of a medium during freezing has a receptacle provided in a structural component. The medium is contained in the receptacle. A sealing element is provided that delimits the receptacle. The sealing element ... | 08/15/2006 |
| 7055507 | Continuously variable drive for superchargers A drive assembly for a supercharger for an internal combustion engine provides a continuously variable drive ratio between the engine and supercharger to provide a substantially, constant drive speed to the supercharger, thereby optimizing performance. The continuou... | 06/06/2006 |
| 7047733 | Compact electro-hydraulic generator to motorize cupola The present invention divulges a particularly compact electro-hydraulic generating set and its application in combination with a compact actuator to pilot the traverse movement of a close cupola head assembly or of one or several offset cupola head assemblies. | 05/23/2006 |
| 6994030 | Pyrotechnic microactuators for microsystems The technical field of the invention is that of microactuators designed for mechanical, chemical, electrical or thermal functions in microsystems, for microelectronic applications such as chips, or biomedical applications such as cards incorporating microfluidics. T... | 02/07/2006 |
| 6892534 | Electro-hydrostatic actuator with a failsafe system An electro-hydrostatic actuator unit that contains a sealed pressurized housing filled with a dielectric fluid. A bi-directional motor is immersed in the fluid and drives a gear pump for exchanging fluid via a control circuit between the chambers of a bi-directional... | 05/17/2005 |
| 6718762 | Contingency hydraulic power unit An hydraulic power assembly 10 is provided, including at least one primary hydraulic power unit 20 supplying hydraulic fluid 30 to a hydraulic system 34, and a contingency hydraulic power unit 50 utilizing the orbiter's helium stor... | 04/13/2004 |
| 6170922 | Pressurized gas to release spring applied hydraulically released brakes A simple hand held carbon dioxide applicator having a pressurized carbon dioxide cartridge is used to release spring applied hydraulically released brakes. The hydraulic line extending between the hydraulic pump and the brake control valve is provided wit... | 01/09/2001 |
| 6161380 | Hydraulic pressure boosting apparatus A booster 3 has a structure that a return valve 14 is formed into a two-step throttle incorporating a first throttle valve 36 and a second throttle valve 37 formed continuously from the first throttle valve 36. When a valve spool 28 has been moved forward... | 12/19/2000 |
| 6053202 | Fail-safe closure system for remotely operable valve actuator A fail-safe closure system for one or a plurality of springless process valve actuators is disclosed. An accumulator is provided with an urging means, such as a spring for pressurizing fluid stored therein. A source of pressurized fluid is also provided. ... | 04/25/2000 |
| 6023134 | Power conversion system for bi-directional conversion between hydraulic power and electrical power A bi-directional power conversion system interconnects hydraulic and electrical power systems on-board a vehicle such as an air-craft, whereby the power conversion system can selectively convert available electrical power to needed hydraulic power or vice... | 02/08/2000 |
| 5950427 | Fail-safe electric hydraulic actuator An electro-hydraulic valve actuator comprising an actuator casing; a piston/rack means in the casing having walls reciprocating linearly to effect linear movements, the reciprocating walls defining a center chamber therebetween and two outside chambers in... | 09/14/1999 |
| 5611199 | Two stage electrohydraulic pressure control valve A two-stage electrohydraulic pressure control valve modulatably controls engagement of a spring applied, pressure released brake when electrical power directed thereto is suddenly lost. The control valve includes a shutdown valve mechanism between a pilot... | 03/18/1997 |
| 5493862 | Continuously variable hydrostatic transmission A continuously variable hydrostatic transmission includes an input shaft connected to drive a hydraulic pump unit, a grounded hydraulic motor unit, and an output shaft. A wedge-shaped swashplate is pivotally mounted to the output shaft in driving connecti... | 02/27/1996 |
| 5447285 | Safety device for cylinder valve automatic switching unit The invention relates to safety device for a cylinder valve automatic switching unit, wherein said valve is automatically closed when some abnormality such as down of an air pressure takes place. A first air-operated selector valve 8 is installed which ca... | 09/05/1995 |
| 5185999 | Hydraulic brake booster and valve members A hydraulic brake booster (10) includes a housing (12) which defines a pressure chamber (16) and a piston (18) within the housing (12) is movable in response to pressurized fluid within the pressure chamber (16) to effectuate a brake application. The pist... | 02/16/1993 |
| 5036660 | Dual actuation harness fitting release Aviator harness fittings are pneutically actuated by a central device including a pressurized gas cartridge. A firing pin may mechanically pierce the cartridge or automatic ballistic actuation of the firing pin may be accomplished by SEA WARS gas-generati... | 08/06/1991 |
| 5020322 | Accumulator blow-back hydraulic circuit A blow-back circuit (10) comprising an accumulator (23) to build up system pressure during normal system operation and an accumulator shut-off valve (13) which prevents dissipation of the accumulator pressure during normal operation. Pressurized fluid is ... | 06/04/1991 |
| 4953445 | Control device with failure detection centering for a double-acting hydraulic jack The invention relates to the control of a hydraulic jack which can be used, for example, for controlling the orientation of the rear wheels of a vehicle with front guiding wheels. In the event of a failure in the supply of fluid under pressure to the cham... | 09/04/1990 |
| 4835967 | Hydraulic booster equipped with emergency accumulator A hydraulic booster equipped with an emergency accumulator, wherein reaction and power pistons are slidably fitted in a housing such that the two pistons define a power chamber therebetween. The booster includes a control valve having a normally closed po... | 06/06/1989 |
| 4757684 | Fail-safe electric actuator A fail-safe electric actuator, for use with a control mechanism such as a valve, is disclosed. The actuator device eliminates the possibility of the control mechanism being locked in operative position by the interruption of electric power, by automatical... | 07/19/1988 |
| 4574904 | Auxilliary steering system An auxilliary hydraulic steering system for use on mobile vehicles having an engine-driven pump supplying hydraulic fluid under pressure to a steering control unit and an accumulator. The accumulator is charged with fluid under pressure from the pump thro... | 03/11/1986 |
| 4531706 | Pressure operated control installation A pressure operated control installation, especially for automotive vehicles, which includes a pressure source and a servo member controlled through a control block. The control block includes a logistor, a control element coupled with a control unit, and... | 07/30/1985 |
| 4507919 | Fail safe actuator A fail-safe actuator mechanism has an actuator housing encapsulated within a tank which stores a pressurized fluid media. Ports of the actuator housing are put into selective fluid communication with both the interior and exterior of the encapsulating tan... | 04/02/1985 |
| 4500066 | Electro-hydraulic control actuator for turbine valves Electro-hydraulic control assembly for turbine valves, including electric control means, a shaft connected to a turbine valve, a valve housing and an integrated compact actuator unit disposed in the housing, the actuator unit including an electro-hydrauli... | 02/19/1985 |
| 4476677 | Hydraulic supply circuit for vehicle steering system An hydraulic supply circuit for a vehicle power steering system of the type having a steering actuator and control valve therefor with hydraulic input, sump and overflow (by-pass) connections and in which any fluid not actually consumed by the actuator is... | 10/16/1984 |
| 4476678 | Control mechanism for pneumatic apparatus The control mechanism is for pneumatic apparatus of the kind comprising a piston-and-cylinder motor coupled between two relatively-movable parts (such as door-leaves) for driving them, when energized, to a predetermined relative position. A pilot valve is... | 10/16/1984 |
| 4440453 | Hydraulic system for a vehicle A hydraulic system for a vehicle having an open-center hydraulic brake booster powered by an engine-driven single rotary pump with an unloader valve into which is incorporated a bypass valve to enable a fluid flow to bypass the unloader valve into the bra... | 04/03/1984 |
| 4422290 | Hydraulic control system for governing steering and implement actuators Implement and steering actuators are selectively actuated through steering and implement control valves respectively by fluid power output of respective steering and implement pumps. A pressure compensator is provided for at times diverting excess fluid f... | 12/27/1983 |
| 4383546 | High temperature, high pressure valve A gate valve having a top inlet and bottom outlet is provided with a horizontally disposed head slidable between closed and open positions. The valve body includes a seat concentric with an inlet passage and adapted to cooperate with a sealing surface on ... | 05/17/1983 |
| 4373698 | Shutoff valve actuator remote control system A shutoff valve actuator remote control system includes a main control apparatus and a duplicating control apparatus connected therewith. The duplicating control apparatus comprises a self-contained power source in the form of a gas generator with an igni... | 02/15/1983 |
| 4359867 | Seat accumulator clutch booster assist A hydraulically actuated clutch booster utilizes a seat accumulator incorporated in a vehicle seat suspension circuit for a source of fluid pressure when the normal clutch booster fluid supply pump is not operating thereby providing hydraulic assist to op... | 11/23/1982 |
| 4348863 | Regenerative energy transfer system A method and apparatus uses energy in an energy output system having a main power source, an energy transmission system and a mechanical output. A first portion of energy generated with the main power source is used to drive the mechanical output under op... | 09/14/1982 |
| 4326558 | Steering system including accumulator for supplying emergency reserve of fluid A hydraulic fluid power system includes an accumulator which stores a reserve of pressure fluid at pump standby pressure. The charging and discharging of the accumulator is controlled by an emergency steering valve which is operable in response to a prede... | 04/27/1982 |
| 4303089 | Steering including accumulator for supplying emergency reserve of fluid A hydraulic fluid power steering system includes an accumulator which stores a reserve of pressure fluid at pump standby pressure. The charging and discharging of the accumulator is controlled by an emergency steering valve which is operable in response t... | 12/01/1981 |
| 4291612 | Power brake system differential air pressure control valve assembly A power brake system has a brake booster operable by differential air pressure provided by a source of vacuum and a source of compressed air pressure. The differential air pressure control valve assembly of the invention maintains a substantially constant... | 09/29/1981 |
| 4286432 | Lock valve with variable length piston and hydraulic system for a work implement using the same PCT No. PCT/US79/00664 Sec. 371 Date Aug. 30, 1979 Sec. 102(e) Date Aug. 30, 1979 PCT Filed Aug. 30, 1979 PCT Pub. No. WO81/00600 PCT Pub. Date Mar. 5, 1981 A lock valve (10) for use in a hydraulic system (90) for positioning the work implement of an eart... | 09/01/1981 |
| 4242867 | Standby supply system for delivering pressure fluid to a user component The standby supply for delivering pressure fluid to a user component includes a fluid pump as a primary fluid source coupled to the user component by a first check valve, an accumulator as a secondary fluid source coupled to the pump by a second check val... | 01/06/1981 |
