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| Number | Title | Issue Date |
| 7146946 | Valve timing adjusting device A valve timing adjusting device includes a first rotor that rotates synchronously with a crankshaft of an engine; a second rotor that is relatively rotatable by a predetermined angle within the first rotor, and is secured on the end face of an intake or an exhaust c... | 12/12/2006 |
| 7104052 | Hydraulic cylinder with integrated accumulator A hydraulic cylinder assembly includes a hydraulic cylinder and an integral concentric accumulator. The hydraulic cylinder has a first piston surface for extending the cylinder, a second piston surface for retracting the cylinder and a third piston surface in dedica... | 09/12/2006 |
| 6907975 | Clutch, in particular for motor vehicle, with pneumatic control A clutch for a motor vehicle having an annular diaphragm (54) with a concave clutch characteristic curve and a pneumatic actuator (76) acting on the diaphragm (54) for clutch release. A mechanism (86, 88) is provided to generate a supplem... | 06/21/2005 |
| 6000675 | Tension-spring return rotary valve actuator A rotary valve actuator with movable actuator linkage maintained in a constant "pull-pull" tension, includes a sliding canister, rotatable lever, and a return spring substantially aligned in-line with each other. The linear motion of the canister in respo... | 12/14/1999 |
| 5953915 | Device for time-dependent control of the duration of regeneration of an air dryer An improved adjustability and functional reliability of a device for time-dependent control of a duration of regeneration of an air dryer including a piston, which is longitudinally guided, displaceably counter to a resistance, in a cylinder by the force ... | 09/21/1999 |
| 5031510 | Evacuation spring for hydraulic/pneumatic muscle A hydraulically or pneumatically actuated muscle has an elongated elastomeric bladder that is covered by a tubular sheath. A fluid conduit is coupled to the bladder to supply hydraulic or pneumatic pressure. A coil tension spring is attached to a distal t... | 07/16/1991 |
| 5003864 | Geared air actuator A geared air actuator comprising a piston mounted for movement within a housing. The piston has a front wall and a hollow body portion which extends rearwardly from the front wall. A spring is mounted within the hollow body portion of said piston. When pn... | 04/02/1991 |
| 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 |
| 4898082 | Molded plastic air cylinder A plastic pneumatic cylinder has a cylinder housing, a piston within the housing, and a rod on which the piston is mounted. The cylinder is molded of a plastic synthetic resin and has a cylindrical bore of a predetermined diameter. The piston is molded in... | 02/06/1990 |
| 4838771 | Biasing force adjusting apparatus for electromagnetically driven reciprocating pump A biasing force adjusting apparatus is used for an electromagnetically driven reciprocating pump in which the piston is reciprocated to achieve pumping by a magnetic force cyclically generated from an electromagnet and a biasing force of a compression coi... | 06/13/1989 |
| 4511117 | Activating apparatus in a liquid conveying system operated by vacuum, preferably a so-called vacuum sewage system An activating apparatus or device, for example for a valve in a liquid conveying system operated by means of a vacuum. The activating apparatus comprises a normally latched or locked operating device which by means of a spring, or the like, is connected t... | 04/16/1985 |
| 4496033 | Dual piston actuator A pair of axially aligned and nested pistons are mounted in a pressure sealed arrangement within the bore of a pressure housing. A primary piston is moved in response to increasing pressure to provide an actuating output force while a secondary piston sim... | 01/29/1985 |
| 4495789 | Frame-straightening device A device for use with a hydraulic cylinder or like for straightening frame members, which converts the extension stroke of the cylinder to a pulling action. The device has a pair of interengaging outer members which are formed to define an elongate cage. ... | 01/29/1985 |
| 4472996 | Toys utilizing fluid propulsion device A series of toys having unique motions are activated by a fluid propelled propulsion device. The propulsion device includes a housing with a cylinder located thereon. A pressurized fluid reservoir connects to the cylinder via a valve. The valve has provis... | 09/25/1984 |
| 4388044 | Water storage tank A liquid storage tank for providing a liquid under pressure in such a way that pressurized air will not be absorbed by the liquid is disclosed. According to one embodiment of this invention, the pressurized storage tank of this invention having side walls... | 06/14/1983 |
| 4306639 | Disc brake caliper with molded flex piston A light weight metal caliper housing has cored holes in the cast bore. A nylon bore insert lines the bore side wall. A molded flex piston has hydraulic fittings incorporated as a part of it and the fittings extend through the cored holes. The center porti... | 12/22/1981 |
| 4108050 | Fluid-driven torsional operators for turning rotary valves and the like Fluid-driven torsional operators for turning rotary valves such as ball valves, butterfly valves and the like and for turning similar devices which swing about a pivot axis, said torsional operators including an inflatable fluid-driven torsional actuator ... | 08/22/1978 |
| 4083290 | Pneumatic adjusting mechanism A pneumatic adjusting mechanism, especially for application in motor vehicles, which consists of a suction-air servo-motor that includes a working cylinder with a diaphragm piston whose piston rod is stressed by a spring against the action of the suction-... | 04/11/1978 |
| 4044651 | Pneumatic function generator assembly A function generator is provided which establishes an output signal according to a functional relationship determined by the preformed contour of an easily precut cam member. The function generator includes a variable gain controller section coupled to a ... | 08/30/1977 |
| 3938426 | Water powered drive for automatic controllers An automatic irrigation controller apparatus having a cam follower operated bank of pilot valves for operating selected pilot operated water valves throughout a watering or irrigation system is provided with a water powered means for receiving water under... | 02/17/1976 |
