Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 8181762 | Frictional engaging piston and spring seat An annular frictional engaging piston includes an annular pressure apply portion which pushes a frictional engagement element in an axial direction against urging force of a return spring that urges in a direction opposite the frictional engagement element, and whic... | 05/22/2012 |
| 7156183 | Electric hydraulic power unit and method of using same An apparatus includes a housing defining a chamber therein and defining an inlet port and an outlet port and a movable pressure barrier, disposed in the chamber, separating the chamber into first and second portions, the inlet port and the outlet port being in fluid... | 01/02/2007 |
| 7028601 | Abrasion preventive structure of reciprocating compressor In an abrasion preventive structure of a reciprocating compressor, by forming a coating layer made of Ni—P alloy material having high hardness onto the surface of a frame at which front (92) and rear (93) resonance springs are contacted or spring mou... | 04/18/2006 |
| 6793470 | Spring supporting structure for reciprocating compressor A spring support structure for reciprocating compressor having a frame unit elastically supported inside a closed container; a reciprocating motor fixed at the frame unit; a compression unit having a piston combined to an armature of the reciprocating motor and a cy... | 09/21/2004 |
| 6435842 | Spring supporting structure of linear compressor The present invention relates to a spring supporting structure of a linear compressor which is capable of reducing the horizontal length of the compressor by reducing the overall length which adds the length of an inner resonance spring to the length of a... | 08/20/2002 |
| 6422530 | Fail-safe fluid actuator A fail-safe fluid actuator comprising a piston slidably disposed within a cylinder. In the event of a pressure loss, the piston is urged to a fail-safe position by a plurality of externally mounted constant force spring mechanisms. In one embodiment the m... | 07/23/2002 |
| 6413057 | Plurality of outer resonance springs for a linear compressor A linear compressor including: a cover fixed at a rear side of a frame; a cylinder fixedly installed in a horizontal direction at the center of inside of the frame; an inner stator assembly fixedly installed at the frame in a state that its inner circumfe... | 07/02/2002 |
| 6164184 | Reaction mechanism for booster In accordance with the invention, a booster is not provided with a mechanism which transmits a braking reaction, and accordingly, a reaction cannot be transmitted to a brake pedal. On the other hand, a pseudo-reaction imparting means is provided to impart... | 12/26/2000 |
| 6003432 | Actuator including a jack An actuator including a jack having first and second pistons engaging a control rod, particularly for rotating the shaft of a fraction-of-a-turn plumbing device. The actuator can also include energy storage cartridges and/or damping members placed between... | 12/21/1999 |
| 5906353 | Toggle valve A toggle valve includes a valve stem which moves a valve body towards and away from a valve seat, an operation member separate from the valve stem, valve stem rollers which are supported by the valve stem and which have shafts whose axes extend in a direc... | 05/25/1999 |
| 5653419 | Diaphragm type high pressure shut-off valve The invention has its object to provide a diaphragm type high pressure shut-off valve which is simple in external shape, can realize miniaturization and is convenient in handling. The shut-off valve comprises a cylindrical housing (10) having a supply uni... | 08/05/1997 |
| 5440969 | Cylinder-operated and spring-loaded driving mechanism for a ball valve The present invention relates to a cylinder-operated driving mechanism for a ball valve, and more particularly to a cylinder-operated driving mechanism for a ball valve in which a plurality of guided compression springs are loaded between the cylinder cap... | 08/15/1995 |
| 5253671 | High pressure diaphragm valve A diaphragm valve for high pressure use has a metal diaphragm which is actuated into and out of direct engagement with a valve seat by an air operator acting through a force multiplying lever assembly. The valve seat is confined by rigid interior and exte... | 10/19/1993 |
| 5215286 | High pressure diaphragm valve A diaphragm valve for high pressure use has a metal diaphragm which is actuated into and out of direct engagement with a valve seat by an air operator acting through a force multiplying lever assembly. The valve seat is confined by rigid interior and exte... | 06/01/1993 |
| 5178360 | Wire cutting valve actuator The invention is a valve actuator or a booster module for an existing valve actuator that provides an incremental force to the valve stem at a position close to valve closure. The force is stored in a spring which is held in the compressed position by a c... | 01/12/1993 |
| 5158005 | Actuator using elastic extensible member An actuator includes an elastic member extensible in axial directions when a pressurized fluid is supplied into the elastic member, and guiding device arranged outwardly of the elastic member and permitting the elastic member to move in the axial directio... | 10/27/1992 |
| 5024490 | Emergency compressed-air brake for automobiles An emergency compressed-air brake for automobiles has the advantage to combine integrally the emergency braking, the service braking and the parking braking, which can be widely used in various road vehicles. The combined braking air-chamber involved is s... | 06/18/1991 |
| 4995305 | Actuator employing a fluid under pressure for the driving in rotation of a rotary shaft An actuator having a tubular body with a cylindrical bore therein within which a piston reciprocates, an output shaft extending into said bore and a linkage for converting the linear movement of the piston into the rotary motion of said shaft. The linkage... | 02/26/1991 |
| 4905574 | Single-acting rotary pneumatic actuator, including at least a precompressed spring assembly The rotary actuator includes at least a precompressed spring assembly comprising a compression coil spring the ends of which are engaged by flanged cups adapted to limit the spring extension and carried slidably on a pin provided, at each end, with a circ... | 03/06/1990 |
| 4884495 | Fluid motor actuator with compression spring fail-safe mechanism A fluid motor actuator of the type in which an actuator member is moved in either one of two opposite directions from a rest position to an actuated position includes a fail-safe mechanism having compression springs coupled with the actuator member for co... | 12/05/1989 |
| 4875404 | Compact fluid powered actuator A fluid actuator having a piston, a pair of springs, a pair of cams, and a pair of cam followers mounted in a housing. A normally open valve is coupled to the actuator output shaft for actuation. When fluid pressure is applied to the piston, the springs a... | 10/24/1989 |
| 4870889 | Hydraulic device for fuel pumping apparatus A hydraulic device includes a piston slidable within a cylinder. Fluid under pressure is admitted to one end of the cylinder through an inlet which contains a restrictor. The piston is formed with an orifice and is biased by a first spring towards the one... | 10/03/1989 |
| 4789312 | Lubrication pump with improved priming handle assembly A lubrication pump includes a piston and cylinder pump assembly comprising a piston arranged for reciprocation within and relative to a cylinder and having a charging stroke and a discharging stroke, a motor drivingly connected to the piston and cylinder ... | 12/06/1988 |
| 4770264 | Vehicle steering system A road vehicle has steerable front and rear wheels, the rear wheels being steered by an electro-hydraulic system responsive to the manual control input to the front wheels. The hydraulic actuator of the system is biased to the straight-ahead steering posi... | 09/13/1988 |
| 4744386 | Modular hydraulic actuator A surface safety valve hydraulic actuator of modular construction. The actuator includes separately installable, removable, and interchangeable wirecutting and non-wirecutting spring modules, used with the same hydraulic cylinder and bonnet. The bonnet is... | 05/17/1988 |
| 4709619 | Proportional magnet Proportional magnet having a housing in which an armature bar is mounted which is movable under the influence of an armature winding arranged in the housing, wherein a hydraulic unit serving to operate the armature bar is additionally provided.... | 12/01/1987 |
| 4651626 | Semi-rotating single acting pneumatic actuator The actuator has a plurality of springs in a circular array, for effecting return movement of two pistons slidable in a bore in the actuator body and each having a rack portion meshing with a pinion on an output shaft extending perpendicularly of the axis... | 03/24/1987 |
| 4623420 | Anvil for ultrasonic slitting apparatus An anvil for our ultrasonic textile slitting apparatus comprises an elongated, flat, substantially rectangular, housing in which two pistons are disposed for motion relative to one another along the longitudinal axis of the housing. A first piston, respon... | 11/18/1986 |
| 4527462 | Sealed-type automatic tensioner A sealed-type automatic tensioner has a body assembly composed of upper and lower tubular bodies held in threaded engagement with each other, a tubular plunger slidably disposed in the body assembly, a piston slidably disposed in the tubular plunger and h... | 07/09/1985 |
| 4523515 | Valve operating cylinder unit In order to enable a piston cylinder unit 1,2 with air entry through a hollow shaft 6, to be operated in either mode of operation with a single type of shaft, it is proposed in accordance with the invention to manufacture the shaft 6 in three parts, namel... | 06/18/1985 |
| 4519575 | Valves and valve actuators There is disclosed a gate valve which is moved to open position by an extendible and retractable, fluid-operated actuator, and which is moved to closed position, upon exhaust of operating fluid, by coil springs which urge follower parts reciprocable with ... | 05/28/1985 |
| 4505188 | Pneumatic actuator A pneumatic positioner with a casing composed of a shell-like bottom part and a shell-like cover part. A membrane plate, is connected through a gas-tight membrane with the side walls of the casing so as to be movable back and forth in the casing in the di... | 03/19/1985 |
| 4479765 | Exhaust gas operated vacuum pump assembly A vacuum pump assembly which is driven by pulsating exhaust gases emanating from an internal combustion engine is disclosed. The pump assembly includes a double-acting pump means for pumping air from a vacuum source and having a reciprocable pumping membe... | 10/30/1984 |
| 4408627 | Exhaust brake valve unit The invention provides an automatic exhaust brake valve unit having a hollow body with an exhaust gas passage extending therethrough and a valve closure member movable in the hollow body between a closed position in which it closes the passage, and an ope... | 10/11/1983 |
| 4396408 | Method and apparatus for tensioning bag filters Installation and maintenance equipment to tension a fabric sleeve filter supported from a bag support frame in a baghouse by a retainer rod and a tensioning spring. A pneumatic tool is configured to be removably coupled to the retainer rod while compressi... | 08/02/1983 |
| 4389984 | Post-shutdown coolant-supply device The impeller bearings in a turbocharger on an internal combustion engine are supplied with a coolant, in the form of lubricating oil from the engine's crankcase, during post-shutdown coasting of the impeller. This coolant is supplied by an accumulator inc... | 06/28/1983 |
| 4385548 | Brake unit having a slack adjuster A brake unit for automatically adjusting slack between the brake surfaces of a railway brake has a pre-stressed spring which is released during the initial stroke of the brake piston in a braking application so as to expedite contact of the brake surfaces... | 05/31/1983 |
| 4354424 | Pneumatic operating device A pneumatic operating device, e.g. for controlling valves, includes a cylinder (2) in which a piston (12) is movable. The piston has an axially extending rack part (11) having teeth which engage with teeth on an operating element (10) arranged in the cyli... | 10/19/1982 |
| 4352320 | Single-acting operating cylinder A single-acting operating cylinder assembly includes a cylinder and piston of rectangular cross section and a spring arrangement for initially forcing the piston into one operating position. The piston has an axial recess with transverse end walls. A stop... | 10/05/1982 |
| 4336746 | Self retracting piston applicable for disk brake assemblies Actuating piston of disk brake is provided with self-retracting 3-element control unit carried, typically, in surrounding annular piston recess with one element in frictional or tensioned registration with wall of piston chamber. Elements are (a) radially... | 06/29/1982 |
