Bizarre Patents
User-operated amusement apparatus for kicking the user's buttocks
An apparatus including a user-operated and controlled apparatus for self-infliction of repetitive blows to the user's buttocks by a plurality of elongated arms bearing flexible extensions that rotate under the user's control.
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| Number | Title | Issue Date |
| 7353746 | Two-stage hand pump A hand pump for inflating rafts or similar inflatables has a first piston with a relatively low pumping volume which is capable of pumping relatively small volumes of air into a raft as the raft becomes full and is approaching its maximum pressure, and a second pist... | 04/08/2008 |
| 7347186 | High-pressure pump for a fuel, with sump in communication with the fuel The pump (7) is provided with a body (16) having a compartment (17), and with at least one pumping element (13) that moves in a cylinder (12) in communication with the compartment (17), to raise the pressure of the fuel. The... | 03/25/2008 |
| 7137763 | Pneumatically driven deburring tool having an articulated air joint A pneumatically driven deburring device having a housing and a pneumatic motor mounted therein which is adapted to receive and drive a deburring tool. A pivot bearing is mounted within the housing adjacent the pneumatic motor. A motor support is held within the pivo... | 11/21/2006 |
| 7131238 | Method of testing seismic braces Braces for bracing objects in structures against forces due to earthquakes are tested by subjecting components of the braces for attaching the braces to the object or structure to cyclic loading of approximately 15 cycles. The cyclic forces are applied to different ... | 11/07/2006 |
| 7033066 | Hydraulic actuator assembly with rotation restraint A hydraulic actuator assembly comprises a pair of hydraulic actuators having cylinders, pistons, and piston rods that are ganged together for extension of their respective piston rods in longitudinally opposite directions wherein at least one of the actuators compri... | 04/25/2006 |
| 6244560 | Blowout preventer ram actuating mechanism A ram actuating mechanism 20 for a blowout preventer 10, the ram actuating mechanism 20 including a hydraulic booster for enhancing the ram closing force. The ram actuating mechanism 20 may be compatible for use with primary pistons 25 which include inter... | 06/12/2001 |
| 5823216 | Automatic awning for recreational vehicle An automatically extendible and retractable awning for a vehicle. Awning material is connected at one end to a recreational vehicle and at the other end to a roller assembly, said roller assembly which is movable between a stored position where the awning... | 10/20/1998 |
| 5813424 | Automatic awning for recreational vehicle An automatically extendible and retractable awning for a vehicle. Awning material is connected at one end to a recreational vehicle and at the other end to a roller assembly, said roller assembly which is movable between a stored position where the awning... | 09/29/1998 |
| 5597006 | Automatic awning for recreational vehicles An automatically extendible and retractable awning for a vehicle. Awning material is connected at one end to a recreational vehicle and at the other end to a roller assembly, said roller assembly which is movable between a stored position where the awning... | 01/28/1997 |
| 5560281 | Linear slide apparatus and method of combining two or more linear slides A fluid actuated linear slide for producing linear movement has a rigid body with a pair of spaced apart parallel bores for slidably receiving a pair of guide rods and a mounting plate fixed to one end of the guide rods. A fluid actuated cylinder is carri... | 10/01/1996 |
| 5431087 | Extended stroke linear actuator assembly An array of symmetrically disposed piston-cylinder assemblies may be utilized to produce oppositely directed movements along a single force axis. Plumbing between the various cylinders may be external or internal, or a combination thereof, the exact form ... | 07/11/1995 |
| 5377432 | Deep excavator A deep excavator comprising a stretchable arm arrangement having four telescopically assembled alms which are simultaneously extended and contracted for excavating earth or sand to form a deep hole. The stretchable arm arrangement houses therein a working... | 01/03/1995 |
| 5353687 | Pocket cylinder for sliding door A compact hydraulic cylinder for use in a recess of a sliding door of a waste processing system. The cylinder includes a housing containing a first cylinder rod extending from one end of the housing and second and third rods extending from an opposite end... | 10/11/1994 |
| 5255591 | Fluid powered indexing apparatus An indexing apparatus (10) having a pair of concentric cylinders (12, 14) with the outer concentric cylinder (12) being fixed against longitudinal movement and the inner cylinder (14) mounted for reciprocal movement relative to the fixed outer cylinder (1... | 10/26/1993 |
| 5249502 | Double action, dual speed and force hydraulic actuators A hydraulic fluid Pressure-operated actuator comprises a first cylinder assembly having an output which operatively carries a second cylinder assembly such that an axial output force is effected from an output shaft of the second cylinder assembly, the ou... | 10/05/1993 |
| 5247872 | Multi-stage hydraulic actuator A multi-stage hydraulic actuator including a cylinder body having an outer cylinder and an inner cylinder provided in the outer cylinder, first and second pistons inserted in the outer cylinder to independently move and provided with first and second work... | 09/28/1993 |
| 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 |
| 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 |
| 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 |
| 5067390 | Double-acting flexible wall actuator A double-acting actuator includes a first tubular body made of an elastic material, a first reinforcing braided structure surrounding the first tubular body, a second tubular body made of an elastic material surrounding the first reinforcing braided struc... | 11/26/1991 |
| 5060539 | Pneumatic stepper motor actuator A pneumatic stepper motor weight actuator captures the advantages of polymeric harmonic gears while occupying less space and eliminating the problems associated with air entrapment in the stator grooves. Air entrapment is eliminated by providing orificed ... | 10/29/1991 |
| 5040452 | Fluid actuators A fluid actuator including a pair of hingedly interconnected members between which is located a fluid expansible element such as a bellows which may be expanded upon application of fluid pressure to cause pivotal movement of the hingedly interconnected me... | 08/20/1991 |
| 5019121 | Helical fluid-actuated torsional motor A hydraulically or pneumatically actuated fluid-dynamic motor has an elongated elastomeric bladder, a braid disposed over the bladder, and a flexible but substantially incompressible spine disposed between the braid and the bladder. The muscle or motor is... | 05/28/1991 |
| 5016522 | Multi-stage air pressure cylinder A multi-stage air pressure cylinder is made of superposed components tightly fastened together wherein additional stages can be added by superposing additional components. The two-stage cylinder comprises two end wall members each having a cylindrical rec... | 05/21/1991 |
| 5003863 | Cylinder-piston unit for displacing a roll at right angles to its longitudinal axis Located in a stationary frame is a cylinder-piston unit, the piston of which is adapted to displace the bearing housing of a roll in a paper-making machine at right angles to the longitudinal axis thereof. The bearing housing is guided in the frame with t... | 04/02/1991 |
| 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 |
| 4975025 | Hydraulic radial piston pump A hydraulic radial piston pump having a plurality of pistons arranged radially around the rotary shaft for sequential reciprocating motion in which working oil is introduced from the inner oil chamber in the pump casing supporting the rotary shaft and pis... | 12/04/1990 |
| 4970942 | Device designed for the control of a gearbox synchronized by an electronic calculator A device designed to actuate the positive clutches of gearbox sliding gears following synchronization of the respective pairs of gears. A cylinder mechanism is provided on each sliding plate of the gearbox, as well as solenoid valves which are controlled ... | 11/20/1990 |
| 4966109 | Hydraulic connecting rod A connecting rod for an internal-combustion, steam or the like, engine, having hydraulic means for converting the reciprocating motion of engine piston to the rotating motion of crankshaft. While producing the same torque on crankshaft, the hydraulic conn... | 10/30/1990 |
| 4860638 | Actuator driving system An actuator driving system for driving a plurality of actuators operable by a fluid under pressure includes a plurality of tube joints connected respectively to the actuators for being coupled with a plurality of double-walled tubes each having a pluralit... | 08/29/1989 |
| 4833975 | Integrated manual brake device An integrated manual brake device on a brake actuation unit, particularly for rail vehicles, and it includes a hydraulic or pneumatic cylinder. The brake actuation unit contains a linkage setter including two parts displaceable relative to each other in a... | 05/30/1989 |
| 4800802 | Hydraulic remote center compliance device The device has primary and secondary frame members interconnected by extensible and retractable positioning members connected by fluid circuits that cause extension of the member at either end of a circuit in response to retraction of the member at the ot... | 01/31/1989 |
| 4667574 | Actuator for movement of a tool and a tire carcass transfer device utilizing the actuator A tire carcass transfer device (111) having a hollow housing (112) for receiving a tire carcass (160), a plurality of flexible cups (21) arranged in a circular band around the housing, vacuum means connected to the cups (21) and fluid powered actuators (1... | 05/26/1987 |
| 4602555 | Preloaded table coupling Table couplings for coupling hydraulic actuators to large shaking tables, such as earthquake simulator tables are preloaded under gaseous pressure to permit the couplings to be nontension carrying couplings, which in turn permits use of hydrostatic slip b... | 07/29/1986 |
| 4600084 | Hydraulic manifold for two and three stage masts A hydraulic manifold is provided on a primary mast section which maximizes the commonalty of hydraulic components used in the hydraulic lift control systems of two and three stage mast assemblies used in lift trucks. Two and three stage mast assemblies ar... | 07/15/1986 |
| 4585093 | Upright for lift truck A lift truck upright having a fixed upright section, a telescopic upright section, and a load carrier mounted on the telescopic section. A pair of main lift cylinder assemblies are located adjacent opposite sides of the upright, and a second pair of relat... | 04/29/1986 |
| 4560327 | Porting and ducting arrangement A porting and ducting arrangement for a pair of adjacent hollow cylinders includes respective pluralities of passages extending longitudinally in the walls of the cylinders. Each passage is provided with a port in communication with the interior of the as... | 12/24/1985 |
| 4516476 | Actuator assembly for an industrial manipulator or the like The assembly includes a plurality of linear actuator modules or units capable of being readily interconnected in various transversely extending orientations relative to each other. The units are so constructed as to effect internal conduction of electrica... | 05/14/1985 |
| 4459898 | Streamlined multi-axis robot wrist assembly with partially enclosed hydraulic and electrical lines to minimize the wrist envelope A multi-axis robot wrist assembly having three hydraulically operated rotary actuators which are mechanically connected in series such that the output of each actuator drivingly positions the body of the succeeding actuator located outboard thereof. The h... | 07/17/1984 |
| 4368662 | Cylinder arrangement for friction-welding machine A friction-welding machine of the type in which a cylinder arrangement applies pressure to urge two workpieces together upon the rotation of one of the workpieces against the other to prepare the interface for bonding. The cylinder arrangement which appli... | 01/18/1983 |
