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| Number | Title | Issue Date |
| 7387500 | Hydro elastic pump which pumps using non-rotary bladeless and valveless operations A pump formed from an asymmetric tube, which is pinched to form asymmetric forces, that pump fluid. ... | 06/17/2008 |
| 7344363 | Remedies to prevent cracking in a liquid system A liquid cooling system utilizing minimal size and volume enclosures, air pockets, compressible objects, and flexible objects is provided to protect against expansion of water-based solutions when frozen. In such a system, pipes, pumps, and heat exchangers are desig... | 03/18/2008 |
| 7331273 | Pneumatic actuator A pneumatic actuator having a flexible plate, the flexible plate being made of a rigid flexible material. The pneumatic actuator further includes at least two elongate, flexible but poorly extensible pneumatic pressure ducts that are disposed side by side and are in... | 02/19/2008 |
| 7246552 | Piston having asymmetrical pin bore slot placement A piston, having a first side subject to major thrust loading and a second side subject to minor thrust loading, is provided. The piston has a crown portion and a first and second pin boss portion depending therefrom. An axially extending pin bore is provided within... | 07/24/2007 |
| 7185580 | Fluid-actuated contraction drive and associated contraction tube A fluid power contractile drive comprising a contractile hose (2), which on fluid actuation of an actuation space (7) delimited by it undergoes longitudinal contraction and which at its two terminal regions (5 and 6) is adapted to be, or ... | 03/06/2007 |
| 6952977 | Weight compensation device A robot is provided with a robot weight compensation device having at least one hose element including an internally pressurized gas-tight inner hose portion cooperating with a high tensile strength outer portion. The high tensile strength outer portion includes non... | 10/11/2005 |
| 6840152 | Actuating means A fluid power operable actuating device, which possesses a flexible contractible tube extending between two spaced head pieces, such flexible contractible tube being caused to expand radially when its inner space is subjected to fluid pressure and transmitting simul... | 01/11/2005 |
| 6807865 | Pressure sensor with a radially tensioned metal diaphragm A pressure sensor having a radially tensioned diaphragm for measuring fluid pressure. The pressure sensor includes a first generally concave metal body member and a second generally concave metal body member, and a radially tensioned flexible metal diaphragm located... | 10/26/2004 |
| 6708808 | Torque-transmitting mechanism with a self-returning piston A torque-transmitting mechanism has first and second housing members, which are interconnected by a plurality of friction members. The torque-transmitting mechanism also includes an apply piston, which has an apply head slidably disposed within one of the housings a... | 03/23/2004 |
| 6679687 | Hydro elastic pump which pumps using non-rotary bladeless and valveless operations A pump formed from an asymmetric tube, which is pinched to form asymmetric forces, that pump fluid.... | 01/20/2004 |
| 6668659 | Load detecting device In a load detecting device, a hermetically sealed sensor chamber is constituted by a sensor head, a bellows, a housing and a stem. A sensor chip for detecting pressure is housed in the sensor chamber that is filled up with liquid. When load is applied to ... | 12/30/2003 |
| 6666127 | Artificial muscle A hydraulically actuated artificial muscle for use with orthetic devices, prosthetic devices or as an actuator for other applications in medical or robotic devices. Working fluid is pumped between two expandable fluid-containing cells, which are complimen... | 12/23/2003 |
| 6539987 | Method of pressure processing enclosures having bi-stable valves The present disclosure provides a method of pressurizing enclosures having bi-stable valves. The valve has an invertible element having a port therethrough, and is converted from an open mode into a closed mode by a sudden change of pressure across the va... | 04/01/2003 |
| 6405533 | Apparatus for reducing vibration inputs to a device and/or for micropositioning Apparatus for compensating for positioning, pointing and/or orientation errors caused by deflections of structural members and components of a high performance machine or device and/or for reducing vibration inputs to such machine or device and/or for mic... | 06/18/2002 |
| 6305913 | Pressure processing a pumpable substance with a flexible membrane An apparatus and method for pressure processing a pumpable substance, such as a pumpable food product or slurry. In one embodiment, the apparatus includes a pressure vessel having an inlet valve toward one end and outlet valve toward the other end. A flex... | 10/23/2001 |
| 6254355 | Hydro elastic pump which pumps using non-rotary bladeless and valveless operations A pump formed from an asymmetric tube, which is pinched to form asymmetric forces, that pump fluid.... | 07/03/2001 |
| 6220145 | Band controlled valve/actuator A band controlled valve apparatus for controlling fluid flow from a source to a sink, including a base (12) having an upper surface and an aperture (16) extending from the upper surface through the base (12) allowing the flow of fluid from the source thro... | 04/24/2001 |
| 6196111 | Band controlled valve/actuator A band controlled valve apparatus for controlling fluid flow from a source to a sink, including a base (12) having an upper surface and an aperture (16) extending from the upper surface through the base (12) allowing the flow of fluid from the source thro... | 03/06/2001 |
| 6193107 | Bladder water gun The present invention is a toy water gun for containment and ejection of water which includes a housing, an ejection nozzle, a bladder and an outlet connection which runs from the bladder to the nozzle. The expandable bladder is located in the housing and... | 02/27/2001 |
| 6146114 | Fluid pump and expandable energy storage device A fluid pump and expandable energy storage device includes a substantially igid circular band, a substantially rigid central hub, a membrane fixed to the band and to the hub, the membrane being enlargeable by a fluid introduced into the device, and a plura... | 11/14/2000 |
| 5992296 | Hydraulic pump In a hydraulic pump, an elastic sealing member for performing sealing between a cylinder and a slide piston reciprocating in the cylinder is provided in the front end side of the slide piston and along the inner circumferential surface of the cylinder so ... | 11/30/1999 |
| 5979864 | Double convoluted pliable pressure conversion unit 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... | 11/09/1999 |
| 5906295 | Bladder for water gun The present invention is a toy water gun for containment and ejection of water which includes a main housing, an ejection nozzle, a bladder housing, a bladder and an outlet connection which runs from the bladder to the nozzle. The expandable bladder is lo... | 05/25/1999 |
| 5865344 | Water gun with refillable pressurized bladder chamber A toy water pistol for discharging a volume of liquid temporarily stored under pressure in an expandable bladder. The water pistol includes a reservoir containing liquid which is initially supplied from the reservoir to a charge cavity upon manipulation o... | 02/02/1999 |
| 5860352 | Actuator for generating high regulating forces and large regulating distances The invention relates to an actuator (10) for generating high regulating forces and large regulating distances with a web (12) for the transmission of regulating forces, which actuates an internal pressure, which may be purposefully influenced, in an actu... | 01/19/1999 |
| 5799827 | Bladder water gun The present invention is an expandable bladder toy water gun. It includes a main housing having a barrel and water ejection nozzle, a handle and a trigger, as well as an inflatable bladder connected to the main housing, the bladder having an inlet and an ... | 09/01/1998 |
| 5758800 | Bladder for water gun A bladder for liquid containment and injection, utilizing the elasticity of the bladder for the motive force for liquid ejection, is made of a hollow, tubular member which has a section of weakened elastic strength relative to the remainder of the tubular... | 06/02/1998 |
| 5657682 | Hose piston for transporting external objects along a flexible hose A hose piston is disposed inside a flexible hose which is filled with fluid and movable in any direction upon hydraulic pressure. The rollers of an external device are engaged on the exterior surface of the flexible hose and are located adjacent to the mi... | 08/19/1997 |
| 5638737 | Spline pumping assembly The present invention relates to a piston assembly for use in a fluid delivery system. The piston assembly is comprised of two elements: a splined-piston having generally a convex shape and a ribbed-base, that receives the piston, which has a complementar... | 06/17/1997 |
| 5553803 | Belt tensioner for safety belts for motor vehicles A belt tensioner for safety belt arrangements in motor vehicles has a holder (11) on which are provided a belt winding reel (12) with a safety belt (13) coiled thereon, a blocking arrangement and an additional drive (15) connected via clutch (20) to the b... | 09/10/1996 |
| 5506012 | Multiple chambered lift bag A lift bag includes a plurality of independently inflatable chambers for controlling lifting of objects. Each chamber is defined by an upper surface sheet and a lower surface sheet, the upper surface sheet of one chamber positioned below an adjacent chamb... | 04/09/1996 |
| 5435230 | Inflation mechanism An inflation mechanism which comprises an inflation head and a sidewall connected by a living hinge or weakened area which permits the inflation head to invert within the interior chamber of the sidewall during compression of the inflation mechanism there... | 07/25/1995 |
| 5431089 | Force generating mechanism Disclosed is a unique force generating mechanism which is easily adapted for use in a compact lightweight tool requiring high work forces. The mechanism includes a force generating member disposed within an actuation chamber where either pneumatic or hydr... | 07/11/1995 |
| 5261320 | Pneumatic rotary drive A pneumatic rotary drive includes a housing and at least one cover sealingly closing the housing. A rotatable shaft extends out of the housing through the at least one cover. At least one guide member is mounted in the housing. A belt mounted in the housi... | 11/16/1993 |
| 5230276 | Fluid-driven actuator including an inflatable sac A fluid-driven actuator including a barrier having narrow openings, an inflatable sac having two portions, a first portion including working surface external to the barrier means, and a second portion compactly folded behind the barrier means, and a movab... | 07/27/1993 |
| 5181452 | Bellows actuator A bellows actuator has at least one bellows chamber comprising at least three chamber segments arranged around an axis. Each of the chamber segments forms a radially outwardly extending protrusion comprising four chamber wall portions, which merge with on... | 01/26/1993 |
| 5167631 | Portable infusion device A fluid pump for infusing medical fluids to a patient includes a housing having an inlet port and an outlet port. The housing further includes a substantially hemispherically shaped surface which is circumscribed by a periphery. An elastomeric membrane is... | 12/01/1992 |
| 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 |
| 5134889 | Mechanical transducer A mechanical transducer is disclosed which includes a converter having a plurality of elongate flexible elements, which are joined together at their opposite ends and spaced at intervals around a longitudinal axis of the transducer. The opposite ends of t... | 08/04/1992 |
| 5097880 | Rotary log debarker with improved air management system An air-seal, air-cell rotary-ring-type log debarker which is capable of operating in two different operating modes. In one operating mode, the air seal is nonpressurized, and debarking tools in the debarker are under the actuation control solely of pressu... | 03/24/1992 |
