Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 7475538 | Digital Hydraulic system A digital hydraulic system including a hydraulic source, a housing and a transtatic bridge. The transtatic bridge being substantially contained within the housing. The transtatic bridge being in fluid communication with the hydraulic source. The transtatic bridge co... | 01/13/2009 |
| 7108006 | Subsea actuator assemblies and methods for extending the water depth capabilities of subsea actuator assemblies A hydraulic pressure compensation system for valve actuator assemblies is described having particular application for subsea wellhead installations. The compensation system includes at least one valve actuator assembly having a housing that retains a reciprocable pi... | 09/19/2006 |
| 7055782 | Cellular actuator device and methods of making and using same A cellular actuator device suitable for a control surface of an aircraft or space craft has a number of elementary cells which are combined to a common arrangement and are formed by pressure-tight chambers. The elementary cells can be acted upon by a pressure medium... | 06/06/2006 |
| 6955048 | Device for telecontrolling a function of drives The invention relates to a device for telecontrolling a function of drives for vehicles or machines. The device consists of at least two manual gearboxes which are arranged at a distance from the drive to be controlled, the gearboxes respectively having a double act... | 10/18/2005 |
| 6729132 | Remotely and directly pedal operated hydraulic compact booster for bi-directional braking A bi-directional braking assembly for a vehicle includes a hydraulic booster assembly for applying proportional fluid pressure to a brake assembly and is actuated by a forward pedal. A master cylinder actuated by a rear pedal communicates fluid to the hydraulic boos... | 05/04/2004 |
| 6269641 | Stroke control tool for subterranean well hydraulic actuator assembly A stroke control tool for controlling the position of a subterranean well hydraulically actuated double acting piston and cylinder actuator assembly. The tool includes hydraulic fluid measuring means positioned adjacent the well and is connected to the ac... | 08/07/2001 |
| 5918464 | Pressurized in-line master cylinder A manually operated in-line secondary master cylinder can be configured for use with any hydraulic system which accommodates multiple manual input forces, and which requires the secondary input device to operate independently of the primary input device. ... | 07/06/1999 |
| 5836161 | Hydraulic pressure booster A hydro-pneumatic pressure booster is proposed in which the reservoir chamber is limited by an elastic partition wall instead of a sliding piston.... | 11/17/1998 |
| 5649424 | Two-stage pressure cylinder A two-stage pressure cylinder having a work cylinder (17,100) with a work piston (18,108), and piston rod (20,110) for contact with a work piece, in which the work piston is movable, an oil cylinder (56,116) to contain hydraulic fluid (H), an oil piston (... | 07/22/1997 |
| 5637803 | Device for monitoring the pressure in several analysis vessels The present invention concerns a device for monitoring the pressure in at least two pressure-tight analysis vessels, that have been sealed by means of lids, whereby heat is supplied to the analysis vessels by means of a heating apparatus. The internal pre... | 06/10/1997 |
| 5582009 | Air-oil intensifier An intensifier type of fluid actuator includes a body including a first manifold connected by a first tube to a second manifold to define an intensifier chamber, a third manifold connected by a second tube to the second manifold to define a reservoir cham... | 12/10/1996 |
| 5526644 | Oil intensifier cylinder An oil intensifier cylinder having a hollow cylindrical body. An intensifier piston is slideably positioned in the body. An intensifier rod is connected to and extends from the intensifier piston. An outer reservoir piston is slideably positioned in the b... | 06/18/1996 |
| 5412512 | Remotely controlled mirror assembly and control system therefor A mirror assembly for external use on large trucks, tractors, buses, etc. A first reflective surface is pivotably supported with respect to a large, shell-like housing in such a way that the surface is movable at will about two perpendicular axes. A power... | 05/02/1995 |
| 5335981 | Brake system with anti-lock control and traction slip control The present invention relates to a brake system with anti-lock control and traction slip control having a master cylinder to which braking pressure can be applied by a brake pedal, which is furnished with pressure fluid by a pressure fluid reservoir, and ... | 08/09/1994 |
| 5259195 | Fluid pressure intensifier The subject invention relates to a fluid pressure intensifier (32) for increasing the pressure of an incompressible fluid and comprises a fluid reservoir (112) supplying fluid to a cylinder housing (72). The housing (72) includes first inlet (88) and outl... | 11/09/1993 |
| 5253477 | Master cylinder and booster assemblies In a master cylinder and booster assembly for a vehicle hydraulic system, the booster has a housing provided with a bore, an inlet connected to a source of hydraulic pressure, and an outlet connected to a booster reservoir, input and boost pistons working... | 10/19/1993 |
| 5197285 | Modular digital actuator A modular digital actuator is formed by interconnecting a plurality of modules. Each of the modules includes a housing having a pair of different sized axially extending cylinder sections in which is received a T-shaped piston with the top of the T mating... | 03/30/1993 |
| 5161865 | Hydraulic modulator with working piston connected to control piston A system for controlling a fluid pressure such a brake fluid pressure of a vehicle includes a pressure control cylinder having a control piston for varying a pressure of a confined fluid, and a motor for producing a mechanical force for actuating the cont... | 11/10/1992 |
| 5143429 | Hydraulic modulator with equal, opposing chambers formed by a piston A system for controlling a fluid pressure includes a pressure modulating cylinder unit having a piston and a cylinder housing defining first and second fluid chambers separated by the piston, a cutoff valve unit for isolating the first and second chambers... | 09/01/1992 |
| 5125234 | Hydraulic cylinder apparatus of the type actuated by booster In a hydraulic cylinder apparatus of a type actuated by a booster, a plunger chamber (39) of a booster (32) is connected in communication with an extension cylinder chamber (35) of a hydraulic cylinder (30). An annular oil make-up chamber (48) is disposed... | 06/30/1992 |
| 5107681 | Oleopneumatic intensifier cylinder An oleopneumatic load intensifier apparatus for creating a rapid advance of a tool carrying rod followed by slow advance of the piston rod at an increased load. The apparatus has a master cylinder and an actuating cylinder that can assume different positi... | 04/28/1992 |
| 5081841 | Hydraulic braking system with second booster chamber The invention is directed to a hydraulic braking system for an automotive vehicle having a power source for generating a hydraulic power pressure, a reservoir, a master cylinder, a hydraulic booster for actuating the master cylinder in response to depress... | 01/21/1992 |
| 5062268 | Fluid actuator A hydraulic actuator is formed by a first element incorporating a plurality of different sized piston cavities by a first set of piston elements which cooperate with a second set of piston elements and piston cavities respectively formed on a second eleme... | 11/05/1991 |
| 5058384 | Digital actuator A hydraulic actuator is formed by an assembly including a first element, a cylinder, a body section and a chamber. The first element is provided with a first set of a plurality of different sized piston cavities and piston elements which cooperate with a ... | 10/22/1991 |
| 5038565 | Pressure generator for a hydraulic vehicle brake system The brake system has an apparatus for traction control having a pressure generator. The pressure generator has a longitudinally displaceable cylinder for receiving brake fluid. The cylinder is connected by means of a valve to a pressure course between a m... | 08/13/1991 |
| 5002166 | Dual mode motor vehicle clutch control system A dual mode clutch control system for a motor vehicle in which the operator has the choice of operating the clutch manually or having the clutch operated in a power mode in response to movement of the gear shift lever. Two embodiments are disclosed. In bo... | 03/26/1991 |
| 4961317 | Oleopneumatic intensifier cylinder An oleopneumatic load intensifier apparatus for creating a rapid advance of a tool carrying piston rod followed by slow advance of the piston rod at an increased load. The apparatus has a master cylinder and an actuating cylinder that can assume different... | 10/09/1990 |
| 4872310 | Electro-hydraulic actuator assembly An electro-hydraulic actuator assembly comprises a master piston-and-cylinder 32, 42 connected to be driven by a rotary actuator 56 and hydraulically connected to a slave master piston-and-cylinder 12 coupled to an output member, e.g. a throttle linkage r... | 10/10/1989 |
| 4843819 | Hydraulic brake booster with parallel booster pistons A brake booster has a first booster cylinder and a booster piston disposed in it for displacing a master cylinder piston to pressurize a brake circuit. A tappet displaces the first booster piston directly if boost fluid pressure is inadequate. A second bo... | 07/04/1989 |
| 4833884 | Fluid actuator for driving article-processing apparatus A fluid actuator including at least two cylinders connected to a common pressurized-fluid supply mechanism. Actuation units are connected to piston rods of the cylinders, respectively. The piston of one of the cylinders is operated by pressurized fluid, a... | 05/30/1989 |
| 4809508 | Clutch-disengaging hydraulic actuators preventing wheel slip Hydraulic booster device intended to be arranged in parallel with a primary actuation circuit between an actuator mechanism and a receiver, the device comprising an electromagnetic valve mechanism (10) arranged between an actuator (12) and a pressure-flui... | 03/07/1989 |
| 4781095 | Pusher A pusher comprises a body with a plurality of piston holes provided on a front surface thereof, pistons slidably fitted to the piston holes and each having a front end extending in front of the body, an oil passage provided in the body and communicated wi... | 11/01/1988 |
| 4779422 | Master-cylinder-actuated plunger for hydraulic brake booster valve A brake system wherein an input from an operator operates a first master cylinder (12) produces first and second hydraulic fluid pressures. Flexible conduit (22 and 24) carries the first and second hydraulic fluid pressures to an actuator (26) for a hydra... | 10/25/1988 |
| 4726190 | Pressure generator with check valve On actuation, each pressure generator at each of a plurality of locations along a conduit develops a pressure rise in the conduit to energize a pressure sensitive device in fluid communication with the conduit. Each pressure generator includes a bulbous m... | 02/23/1988 |
| 4633726 | External hydraulic driving system for motorcycle brake, clutch and gear shift A hydraulic driving system for motorcycle gear shift includes a primary cylinder combination, a secondary cylinder and a set of delivery conduits for handling hydraulic fluid connected therebetween, in which two primary cylinders with different diameters ... | 01/06/1987 |
| 4576417 | Power assisted braking system with wheel lock control A brake control system in which the master cylinder has two pressurizing chambers for each brake circuit. Three brake circuits are disclosed in detail. One piston of each set of pressurizing chambers is directly applied by brake pedal force. The other pis... | 03/18/1986 |
| 4543791 | Power brake unit A power brake unit for automotive vehicles comprising a valve adapted to meter fluid from an energy source into a booster chamber to act upon a booster piston arrangement. The booster piston arrangement includes a first booster piston and a second booster... | 10/01/1985 |
| 4526169 | Fine control system for a glass electrode or the like An improved system for finely and precisely controlling the operational position of a glass electrode, micropipette, micro surgical knife or the like with the aid of hydraulic remote control devices including hydraulic hoses is disclosed. This system incl... | 07/02/1985 |
| 4505519 | Braking system for automobile vehicle formed by a tractor and a trailer According to the invention, the braking system includes two tandem master cylinders (100, 200), the first (100) having a first pressure chamber (110) connected to the left brake (132) of the tractor and a second pressure chamber (112) connected to the tra... | 03/19/1985 |
| 4502280 | Hydraulic applications An apparatus that controls movement of an arm through a gaseous or liquid fluid. The apparatus incorporates a plurality of longitudinally extensible hose members that expand and contract their respective lengths responsive to introduction and withdrawal, ... | 03/05/1985 |
