Bizarre Patents
Apparatus for Simulating a High Five
A self-righting hand-arm configuration which is adapted to pivot when struck by a user, thereby simulating a "high five."
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| Number | Title | Issue Date |
| 7921765 | Piston for automatic transmission To prevent effects of small amplitude oscillations caused by pressure fluctuation, eccentric attachment of a cancel plate and biased load application of a return spring, and to achieve a long service life of the inner peripheral seal portion, a BPS (1) with a... | 04/12/2011 |
| 7350391 | Method for manufacturing clutch housing A method for manufacturing a clutch housing comprises: a first step of forming a work into a pre-product having a shaft portion and an outer drum portion enclosing the shaft portion integrally with the shaft portion; a second step of subjecting the pre-product to pr... | 04/01/2008 |
| 7275899 | Machining apparatus with coolant-operated clamp device Machining coolant/lubricant is used to operate a piston of a clamping-side coupler by feeding same via a coolant feed passage to a clamping pressure chamber through a first check valve and a clamping pressure fluid passage. The same coolant/lubricant is discharged f... | 10/02/2007 |
| 6415900 | Hydraulic control receiver with closing plate A hydraulic receiver for clutch control having a fixed part including an internal guide tube and a concentric external body defining a blind annular cavity supplied with fluid. A piston carrying a drive element for engaging a declutching device is mounted... | 07/09/2002 |
| 6354188 | Hydraulic actuator, in particular for engaging, a tube guide integral with an external body The invention concerns a hydraulic, in particular clutching, actuator for receiving control data from a hydraulic circuit in the form of pressure variations. The concentric-type actuator (8) for hydraulic control comprises a fixed part (9) consisting of a... | 03/12/2002 |
| 6244409 | Slave cylinder for a centered clutch release system A hydraulically operated central release unit for a motor vehicle clutch is designed as a slave cylinder that is arranged inside a clutch housing. The central release unit includes a housing in which a ring piston is movably guided. The ring piston has a ... | 06/12/2001 |
| 6193482 | Structure of a piston of an air-filing device The present invention relates to an improved structure of a piston for air-filing device by making use of air pressure formed as a result of the reciprocation action of piston within the cylinder to urge an air-tightness disc mounted at the top of the pis... | 02/27/2001 |
| 6086339 | Solar-powered reciprocating pump A solar-powered reciprocating pump for submersible use in a well, such as a water well. The pump has a pumping section with a plunger therein. The pump also has a drive section with a rotating output shaft and a transmission section which converts the rot... | 07/11/2000 |
| 6038959 | Cylinder device for displacing workpiece A cylinder device includes a casing with a pair of fluid inlet/outlet ports defined therein, a base plate, a piston fixed to the base plate, a cylinder, and a top plate. The cylinder device also has first, second, and third cylinder chambers defined in th... | 03/21/2000 |
| 5974910 | Accumulator piston An accumulator piston for an automatic transmission. The piston comprises two components, the first and second being cup elements welded together with their closed ends in abutting relation. The lower cup includes a curled back portion with a radial flang... | 11/02/1999 |
| 5964333 | Friction clutch and a slave cylinder for the operation of a friction clutch A slave cylinder for the operation of a friction clutch, especially in motor vehicles, with a housing, an inner portion, an annular or cylindrical piston which annular piston is positioned between the housing and the inner portion, a clutch release sleeve... | 10/12/1999 |
| 5957029 | Linear thruster A linear thruster is disclosed in which a load beam is linearly moved by fluid power relative to a guide beam and a piston. The beams are multisided in cross-section to substantially increase the linear bearing area between the bodies and, thereby, substa... | 09/28/1999 |
| 5865442 | Lip-like seal A piston seal has formed on one side of the piston body upon which oil pressure works are a tapered surface portion which extends in a direction away from a piston sliding wall and a parallel surface portion. A lip-like seal is formed of a seal base porti... | 02/02/1999 |
| 5806648 | Fluid pressure ram provided with a sliding intermediate chamber The invention concerns a fluid pressure ram having a fixed cylindrical control chamber defined radially by inner and outer partitions, in which one axial end of the chamber is closed off by a piston which has a cylindrical housing and in which, in the ret... | 09/15/1998 |
| 5787790 | Actuator with an overflow chamber and means for returning the fluid from the overflow chamber during a reverse stroke An actuator, particularly for the operation of a vehicle clutch in which an annular piston (10) slides between cylinder walls (11, 12) to define an annular working chamber (20). A sealing means (15) seals the piston to the cylinder walls and an overflow c... | 08/04/1998 |
| 5787791 | Turbocharger actuator with rolling O-ring An actuator for a turbocharger includes a housing having a chamber therein, a piston assembly having a rod and a piston secured to a rod for axial movement therewith, a spring operatively interposed between the piston and the housing for urging the piston... | 08/04/1998 |
| 5671652 | Rotary actuator A fluid powered rotary actuator having a body with first and second ends. The body has a generally cylindrical interior sidewall with a grooved, inwardly facing circumferential portion. The body is adapted for coupling to a first external member. A drive ... | 09/30/1997 |
| 5540053 | Actuating unit for a hydraulic brake system for automotive vehicles An actuating unit for a hydraulic brake system for automotive vehicles includes a vacuum brake power booster and a master brake cylinder. To transmit the reaction forces, developing during actuation in the master brake cylinder, to a vehicle body wall whi... | 07/30/1996 |
| 5492053 | Bonded piston and seal assembly A piston and seal assembly that has a rigid core with an elastomeric seal bonded thereto. The core has an annular outer cylindrical edge, a forwardly facing surface and a rearwardly facing surface. The elastomeric member is bonded to the core so as to enc... | 02/20/1996 |
| 5480017 | Annular hydraulic clutch release cylinder device In a clutch release cylinder device, comprising an annular cylinder defining an annular recess, an annular piston slidably received in the annular recess; and an annular clutch release bearing assembly including a release bearing, the annular cylinder is ... | 01/02/1996 |
| 5410946 | Hydraulic actuator A hydraulic actuator including a single cylinder body which defined therein a pressure chamber in which a first piston with a piston rod and a second piston with a piston rod are independently movably inserted, a first working member secured to the first ... | 05/02/1995 |
| 5307915 | Fluid-actuable releaser for a friction clutch The invention relates to a fluid-actuable releaser in which an annular piston (6) is guided in a casing (3) which is provided with a sleeve (10) for guiding the annular piston (6) radially internally and for sealing purposes, the sleeve (10) being axially... | 05/03/1994 |
| 5297382 | Intensifier cylinder An intensifier cylinder including a body structure defining a first bore, a first piston structure including a piston mounted in the first bore and a piston rod secured to the piston and extending at its forward end through an end wall of the body structu... | 03/29/1994 |
| 5249423 | Master cylinder A master cylinder includes a second piston that is provided with a hollow portion. The hollow portion includes a yoke portion for receiving an end of the second return spring, a cylindrical portion having a diameter that is larger than the diameter of the... | 10/05/1993 |
| 5211099 | Slave cylinder for a hydraulic actuating system of a motor vehicle friction clutch A slave cylinder of the annular cylinder type is proposed, whereof the annular piston (45) able to slide axially between an outer cylinder wall (29) and an inner cylinder wall (33) is sealed by a grooved sealing ring (53) with respect to the pressure cham... | 05/18/1993 |
| 5201178 | Hydra-jack screw A hydra-jack screw apparatus is provided for exerting a force against an object, for adjusting the magnitude of the force exerted against the object, and for providing a visual indication of the magnitude of the force exerted against the object. The appar... | 04/13/1993 |
| 5193433 | Piston sealing and dampening device Piston sealing and dampening device in a pressurized-fluid cylinder, where a piston (3) has a central recess (3a) facing towards a cylinder end cap (1a) and disposed such that when the piston is in the vicinity of its end position, said recess accommodate... | 03/16/1993 |
| 5129311 | Piston assembly with primary and co-centric secondary portions A piston assembly comprising a primary piston and a co-centric secondary piston. The pistons are received within a housing for reciprocating movement therein and relative to each other. The housing and the pistons are arranged for operating pressure to be... | 07/14/1992 |
| 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 |
| 5070766 | Hydraulic valve actuator This hydraulic actuator has a drive volume (11) pressurized by extreme-pressure oil. The oil pressure is converted into a valve movement by a drive piston (10). A spring element acts upon the drive piston (10) in a manner opposing the oil pressure. The ac... | 12/10/1991 |
| 5063828 | Actuator with a lock mechanism An actuator including a cylinder having a longitudinal bore, a piston slidably and sealingly inserted into the cylinder, and a lock mechanism for temporarily locking the piston, the cylinder including a cylinder body having the longitudinal bore, a cylind... | 11/12/1991 |
| 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 |
| 5052277 | Hydraulic cylinder for braking elements of vehicles In an hydraulic cylinder for vehicle braking elements, a clamping piston (1) moved in a housing (3) by hydraulic pressure acts relative to a brake lining carrier bearing a brake lining, e.g., in the form of a brake shoe which, during braking, is forced ag... | 10/01/1991 |
| 5044255 | Brake regulator with second boost chamber The vacuum servomotor comprises a main casing (12) divided sealingly on the inside into first and second chambers (10, 20) by a flexible membrane (9) bearing on a rigid disk (7) integral with an activating piston (3). The first chamber (10) is subjected t... | 09/03/1991 |
| 4993529 | Concentrically mounted hydraulic clutch actuator The hydraulic clutch actuator for a motor vehicle of the concentric type in which the actuator is mounted concentrically around the transmission input shaft of the vehicle within the housing of the clutch. The actuator includes a housing structure definin... | 02/19/1991 |
| 4984509 | Multistage cylinder actuator A multistage cylinder actuator comprising a center cylinder unit and annular auxiliary cylinder units which are concentrically located around the center cylinder and which are removably attached to a common plate so as to independently operate.... | 01/15/1991 |
| 4970945 | Actuating piston assembly, and seal therefor, for torque transmitting systems An actuating piston assembly (10, 110) for a torque transmitting device (11). The actuating piston assembly (10, 110) has a seal subassembly (35, 135) with a supporting annulus (36, 136) and a seal member (38, 138). The seal member (38, 138) is preferably... | 11/20/1990 |
| 4939983 | Fluid pressure operated positioning apparatus A fluid pressure operated positioning apparatus has a cylinder (1), formed as an annular cylinder, with an outer cylinder wall (2) and an inner cylinder wall (3) coaxial with and spaced apart radially from the outer cylinder wall. In the annular cylinder,... | 07/10/1990 |
| 4920288 | Piston engine with dynamic groove bearing internal to piston and isolated from compression space A piston engine having a reciprocating piston, which is journalled in a radial direction with respect to the direction of translation by means of at least one dynamic groove bearing located within the piston and is separated from a compression space by an... | 04/24/1990 |
