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| Number | Title | Issue Date |
| 5155997 | Force-amplifying actuator with capsule-type transmission A fluid transmission linear actuator having a chamber with a cylindrical boundary and a central axis. An output plunger has a head in the boundary. A neck is formed on the chamber with a passage entering it. An input plunger is axially movable in the neck... | 10/20/1992 |
| 5154108 | Compact metallic bellows A compact metal bellows preferably for converting pressure changes into lar motion, has alternating inner and outer welds accomplished by a laser weld technique. An inner weld fixture is provided for deflecting a portion of the bellows away from the very... | 10/13/1992 |
| 5137425 | Propfan engine having two oppositely rotating fan rotors A propfan engine having two oppositely rotating fan rotors both driven by a low-pressure turbine by way of a drive shaft includes a reversing transmission. The reversing transmission drives one fan rotor, while the other fan rotor is coupled directly to t... | 08/11/1992 |
| 5134923 | Linear to rotary movement valve actuator The invention is directed to a pneumatic or hydraulic rotational power drive particularly suited for a ball stopcock type valve, the power drive consisting of a power cylinder being located coaxially to the rotation axis of the cock plug, the piston rod s... | 08/04/1992 |
| 5107680 | Hydraulic cylinder An end cap adapted to be inserted into one end of a hydraulic cylinder having a body of plastic material defining a bore open at one end thereof and an end wall at the other end thereof closing the bore. A cylindrical tube is positioned within the bore an... | 04/28/1992 |
| 5105728 | Balanced variable-displacement compressor A variable-displacement compressor includes a wobble member for driving a pistons, and a rotation member for wobbling the wobbling member, a first support portion for supporting a wobbling member in such a manner that the angle of wobbling of the wobbling... | 04/21/1992 |
| 5105917 | Disc brake piston A disc brake piston is formed from a stamping operation and is preferably constructed from stainless steel. The piston includes a hollow cylindrical body having a closed end and an open end. In one preferred embodiment, the open end is provided with a rad... | 04/21/1992 |
| 5104132 | Piston ring having nitriding layer and composite Ni-B plating layer A piston ring for use in an internal combustion engine. The piston ring includes a base body, a nitriding layer formed at an outer peripheral surface portion of the base body, and a composite Ni-B diffusion plating layer formed over the nitriding layer. T... | 04/14/1992 |
| 5099749 | Compound motion fluid actuating device and method A rotary/linear fluid actuator includes a cylinder closed at one end by a rotary actuator and at its other end by a forward housing. A piston is disposed in the cylinder. A hollow piston rod, the forward end of which is closed, extends out of the cylinder... | 03/31/1992 |
| 5095808 | Sequential remote control plug release system A sequential remote control plug release system allows actuation of plug release plungers and manifold valves associated with a cementing plug container only in a predetermined sequence. With regard to a plug container having two plugs, and thus two plug ... | 03/17/1992 |
| 5095806 | Device in a hydraulic power system connected to a load driving hydraulic motor Device in a hydraulic power system connected to load driving hydraulic motor (18; 32), comprising a pilot controlled flow regulating directional valve (1; 29) for alternative connection of the service ports of the motor (18; 32) to a pressure medium sourc... | 03/17/1992 |
| 5095809 | Piston vibrator having an asymmetric cylindrical bore The invention relates to a piston vibrator comprising a case with at least one cylindrical bore (5), at least one air connection (7) taken laterally to the bore (5), and a piston (2) longitudinally displaceable in the bore (5). As a means of making such a... | 03/17/1992 |
| 5094150 | Pump piston for axial piston pumps In the pump piston for axial piston pumps which comprises a ceramic piston and a drive member of metallic material the ceramic piston has an end face of which from 20 to 80% is in the form of a joint surface for a soldered connection to the drive member.... | 03/10/1992 |
| 5094148 | Piston stem insert for a carpule based piston A piston stem insert to be received within a hollow receptacle that is molded at the interior of a carpule based piston, so that a piston stem may be easily attached to and detached from the piston by way of the insert. In a first embodiment of the invent... | 03/10/1992 |
| 5094149 | Pistons having a component incorporated therein Pistons and a method for making them are described. The pistons have reinforcing components, such as piston ring groove inserts, incorporated therein. The reinforcements have one or more porous bodies joined thereto, for example, by brazing and which are ... | 03/10/1992 |
| 5090201 | Fluid pressure actuator The actuator comprises a clutch pedal lever (12) which is pivotally connected to a support (17). The pedal is integral with a cylinder (18) having a piston (20) therein which is connected to a hollow pushrod (28). The pushrod is also pivotally connected t... | 02/25/1992 |
| 5086690 | Booster interlock divider and diaphragm concept A peripheral sealed interlock for a dual diaphragm tandem vacuum booster with front and rear housings is provided. An outer radial peripheral end of a divider of the inventive interlock is greatly simplified and in the preferred embodiment a bead of a sec... | 02/11/1992 |
| 5086691 | Gas compression device having isolated compression and lubrication chambers A high-performance, robust gas-compression device of long-term reliability is adapted in particular for storing nitrogen gas under compression, and includes a substantially cylindrical body (1), a piston (4) partially projecting into the gas-storage chamb... | 02/11/1992 |
| 5085053 | Swashplate assembly for a swashplate type hydraulic pressure device A power train for vehicles having a swashplate type continuously variable transmission having a swashplate hydraulic pump and a swashplate hydraulic motor, a transmission cylinder therebetween with a plurality of pump plunger holes and motor plunger holes... | 02/04/1992 |
| 5085131 | Hydraulic cylinder for automotive steering systems and the like An automotive steering system hydraulic cylinder and method for making the cylinder are disclosed. The cylinder is attached to a rack and pinion gear assembly housing so that a piston from the assembly creates a variable displacement chamber within the cy... | 02/04/1992 |
| 5083429 | Method of and compression tube for increasing pressure of a flowing gaseous medium, and power machine applying the compression tube In a method of and a compression tube (10) for increasing pressure of a flowing gaseous medium the gaseous medium is pressed by an accelerating element (8) to flow with supersonic velocity. Heat is abstracted from the gaseous medium having supersonic velo... | 01/28/1992 |
| 5083499 | Impact motor with improved sealing of a drive piston An impact motor comprises a housing (10) with a cylinder (11) therein, in which a reciprocating drive piston (40) via a gas cushion in a working chamber (44) of said cylinder (11) repeatedly drives a hammer piston (15) to impact on and to return from the ... | 01/28/1992 |
| 5083498 | Bendable actuator A bendable actuator includes a tubular body made of an elastic material, a reinforcing braided structure surrounding the tubular body, and closure members closing both open ends of the tubular body and the reinforcing braided structure, respectively. At l... | 01/28/1992 |
| 5081909 | Releasable latch mechanism for attaching an actuator to a valve An actuator comprising a housing having a chamber and a piston slidably received within the chamber. The housing is provided with an inlet port to the chamber for the introduction of an operating fluid to cause the piston to slide within the chamber. The ... | 01/21/1992 |
| 5081837 | Hydraulic control circuit A hydraulic control circuit adequate to control a main hydraulic actuator and auxiliary hydraulic actuators. The main actuator drives farm machinery mounted to an agricultural tractor or the like. The auxiliary actuators drive farm attachments independent... | 01/21/1992 |
| 5081910 | Locking linear actuator A power cylinder assembly including means to positively lock the piston rod of the assembly in the forward extended position of the cylinder assembly. The locking means includes a pair of cam plates that are moved radially outwardly into locking engagemen... | 01/21/1992 |
| 5080554 | Windscreen washer pump for vehicle Disclosed herein is a windscreen washer pump, which is suitable for use with a vehicle, of a type wherein washer fluid is forcibly pressurized by means of an impeller, to be supplied to a vehicle windscreen or the like. A plurality of supplemental vanes a... | 01/14/1992 |
| 5079998 | Pneumatic driver A pneumatic driver is disclosed. The pneumatic driver includes a frame and a shaft movable between an extended driving position and a retracted position relative to the frame. A first inflatable air bladder is supported by the frame. The first inflatable ... | 01/14/1992 |
| 5079996 | Positive displacement control for a variable displacement compressor A fluid pumping assembly including a housing and a plurality of pistons disposed parallel relative to one another and supported for reciprocal movement in the housing. The assembly also includes a shaft which is supported by the housing and which has a lo... | 01/14/1992 |
| 5079997 | Piston seal device for a pneumatic cylinder A piston seal device of pneumatic cylinder which satisfies the required tightness of a seal as well as the required lubrication characteristics for a piston movement is disclosed. The piston seal device for maintining different pressures acting on each si... | 01/14/1992 |
| 5076147 | Pressure sensor including a diaphragm having a protective layer thereon The pressure sensor consists of a substrate and a diaphragm joined together around the periphery so as to form a chamber. The surface of the diaphragm facing away from the substrate is exposed to a medium whose pressure is to be measured. To protect the d... | 12/31/1991 |
| 5076148 | Piston for axial piston machines A piston for axial piston machines in the form of a hollow body with an axial cavity therein into which an insert is inserted and is secured axially by means of a collar in the wall of the hollow body surrounding the insert overlapping its outer end face ... | 12/31/1991 |
| 5076149 | Wrist pin, piston assembly and method for making same A piston assembly is disclosed having a wrist pin for pivotably attaching a connecting rod to a piston for use in an internal combustion engine. The wrist pin is formed from an elongated circular cylindrical body having a pair of deformable sections forme... | 12/31/1991 |
| 5076150 | Piston assembly with wear resistant piston ring lands The Assembly comprises a piston body having a longitudinal axis to which are added, in interlayered fashion, separate, piston-ring lands and spacers. In one embodiment, a pair of rider rings are coupled to the piston body, in spaced apart locations, to gu... | 12/31/1991 |
| 5074193 | Marine power steering system A marine hydraulic system for operation of a power steering assembly includes a pressure accumulator to provide pressurized hydraulic fluid and valving that permits the transfer of hydraulic fluid within the cylinder to provide efficient use of hyraulic f... | 12/24/1991 |
| 5074196 | Flexible gas impermeable sandwich diaphragm The present invention provides a compliant molded diaphragm which includes an operable surface area for forming a flexiblle barrier to prevent fluid flow between opposing sides of the diaphragm. The diaphragm is formed as a sandwich structure having first... | 12/24/1991 |
| 5072651 | Direct drive type rotation dividing table A direct drive type rotation dividing table includes a dividing table mounted on an output shaft of a rotor which is accommodated in a housing together with a stator. A clamp mechanism for maintaining the dividing table at a stopped position includes a cy... | 12/17/1991 |
| 5072811 | Telescopic brake piston A telescopic brake piston includes a cylindrical housing and a pair of concentric pistons. A first hydraulic cavity is provided between an outer piston and the housing, while a second hydraulic cavity, communicating with a source requesting the applicatio... | 12/17/1991 |
| 5072652 | Gripping device having impact cushioning means A fluid pressure actuated clamp or gripper includes a mechanism housing mounted upon and projecting forwardly from the front end of the fluid pressure motor housing to define a passage loosely enclosing the projecting portion of the piston rod of the moto... | 12/17/1991 |
| 5072654 | Piston and bearing assemblies A novel prefinished piston pin insert bearing is described wherein the tight radial clearances required for acceptable bearing function are maintained in spite of the tolerances required for assembly through a unique inner bearing surface geometry and thr... | 12/17/1991 |
