Bizarre Patents
An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 7984669 | Auxiliary force steering device for a vehicle A power steering device for a vehicle which is disposed in the transmission path between a steering handle and a steerable vehicle wheel, comprises a servo cylinder having two pressure chambers, which are separated by a working piston and are each connected to a pre... | 07/26/2011 |
| 7325781 | Automatic bathroom flushers with modular design A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou... | 02/05/2008 |
| 7322501 | Fastener driving tool A cylinder is constituted such that the cylinder includes a large diameter portion constituted by forming a portion thereof brought into contact with an O ring by a diameter larger than a diameter of other portion when a piston is disposed at an upper dead center an... | 01/29/2008 |
| 7258034 | Rack bar of power steering gearbox Disclosed is an apparatus for protecting impact to a rack bar of a power steering gearbox comprising an oil pressure cylinder, to which oil which has passed through an oil pressure pump and a rotary valve is supplied through a left port or right port, a rack bar dis... | 08/21/2007 |
| 7188822 | Enclosures for automatic bathroom flushers A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou... | 03/13/2007 |
| 7156363 | Bathroom flushers with novel sensors and controllers A bathroom flusher (10) includes a body having an inlet (12) in communication with a supply line and an outlet (16) in communication with a flush conduit, a valve assembly in the body positioned to close water flow between the inlet and the outl... | 01/02/2007 |
| 7093435 | Hydraulic controller A hydraulic controller includes: a pair of liquid chambers; and an on-off valve capable of opening and closing a flow channel on the side of the liquid chamber with a higher hydraulic pressure out of the pair of liquid chambers. The flow channel can provide communic... | 08/22/2006 |
| 7066003 | Hydraulic tool with rapid ram advance A hydraulic tool including a frame having a hydraulic conduit system; a ram movably connected to the frame; and a multi-speed ram advancement system for advancing the ram in at least two different rates of movement on the frame. The multi-speed ram advancement syste... | 06/27/2006 |
| 6854631 | Pneumatic tool with self-sealing diaphragm valve system A fastener driving device comprises a housing having a chamber constructed and arranged to contain compressed air, a cylinder disposed within the housing, a piston disposed within the cylinder and movable between upper and lower positions within the cylinder, a fast... | 02/15/2005 |
| 6382075 | Snubbing arrangement for a fluid cylinder assembly A snubbing arrangement functions to control the rate of deceleration of a piston and rod assembly within a fluid cylinder as the piston and rod assembly nears the bottom of the piston cavity. A flow blocking mechanism is attached to the piston and rod ass... | 05/07/2002 |
| 6345564 | Semi-levered landing gear and auxiliary strut thereof A semi-levered landing gear includes a main strut, a wheel truck pivotally attached at a main pivot to a lower end of the main strut and supporting forward and aft wheels, and an auxiliary strut attached at its upper end to the main strut and at its lower... | 02/12/2002 |
| 6318232 | Pressure-cutoff arrangement for an auxiliary power steering system in the end positions of the steering lock The invention relates to a pressure-cutoff arrangement for an auxiliary power steering system in the end positions of the steering lock, having at least one working poston 2 which is displaceable in the axial direction in a steering housing 1 and delimits... | 11/20/2001 |
| 6170383 | Piston bypass valve A bypass valve is disclosed which relieves pressure on the end cap and rod guide of a cylinder as the piston approaches them. The bypass valve has a cylindrical body with end caps on each end, the end caps serving as stop members. The bypass valve is prov... | 01/09/2001 |
| 6129001 | Method and valve apparatus for controlling a reciprocatable fluid actuated power machine A method and an apparatus for controlling the function of all kinds of reciprocable power machines which are actuated by pneumatic, hydraulic of any other pressure fluid, irrespective if the machines are of rotary or axially operating type, in which the a... | 10/10/2000 |
| 6071096 | Pneumatic cylinder, in particular for actuating fume extraction valves in fume and heat extraction plants A pneumatic cylinder for actuating fume extraction valves in fume and heat extraction plants has a piston (2) that may be actuated from both sides with at least one working surface and that can be made to slide by pressurised air in a cylinder (1) with at... | 06/06/2000 |
| 5868216 | Hydraulic rack-and-pinion steering assembly For a hydraulic rack-and-pinion steering assembly for which a working piston is guided in a hydraulic cylinder which features an end limit stop by which, in an end position of the working piston, a path for the pressure agent supplied to the working pisto... | 02/09/1999 |
| 5839527 | Multi-axle steering system for vehicles A multi-axle steering system which is intended for vehicles has a steering gear (4) for a first steering axle (1) and hydrostatic steering for a second steering axle (2). A master cylinder (11) is disposed on the first steering axle (1) and a slave cylind... | 11/24/1998 |
| 5778755 | Control valve having a sensor switchable between an open and a closed condition A novel adjustment assembly for use with a hydraulic control apparatus. The hydraulic control apparatus is attached to a hydraulically operated tool to provide a desired hydraulically powered function. The present invention allows the hydraulic control ap... | 07/14/1998 |
| 5425305 | Hydraulic cylinder piston with center flow bypass valve A relief valve for a hydraulic piston consists of a tubular mid-section with closed ends and circular stops at each end. The tubular center section has cross ports at each end that run perpendicularly to the axis of the valve. The cross parts are situated... | 06/20/1995 |
| 5405407 | Cylinder for artificial leg In an artificial leg for a person having an upper thigh cut and a knee joint lost, a cylinder disposed between upper and lower leg members, which are coupled through a pivotable joint, for controlling bending and straightening of the joint by an air cushi... | 04/11/1995 |
| 5110251 | Hydraulic platform lift for truck trailers A hydraulic platform lift for use on trucks and truck trailers has two hydraulic cylinders, one on each side of a door. The cylinders are phasing cylinders in that one cylinder is larger than the other cylinder by a specific ratio. The cross-sectional are... | 05/05/1992 |
| 5074192 | Supply device and procedure for press actuators, with recovery of the raising energy Device and procedure for the supply, with recovery of the raising energy, of press actuators having a cylinder within which a piston delimits two chambers, namely an upper and a lower chamber, which are supplied with pneumatic power, the said device havin... | 12/24/1991 |
| 5029514 | Nozzle hydraulic actuator ring with cooling flow A hydraulic actuator system, for use in an aircraft, and in which the servo fluid supply to the system is used to provide for the operation and cooling of the system. The system comprises a hydraulically operated piston mechanism including at least one hy... | 07/09/1991 |
| 5007327 | Servo actuator A hydraulic servo actuator adapted to control a driven member in accordance with an operation of a servo circuit through which servo oil flows comprises a main cylinder and an associated piston, associated piston being reciprocable within the cylinder and... | 04/16/1991 |
| 4969807 | Gas compressor with buffer spaces A gas compressor for use in a gas refrigerator includes a compression space having a volume varied with a positional shift of a piston when the latter reciprocates in a cylinder, a first buffer space communicating with the compression space in one directi... | 11/13/1990 |
| 4891864 | Disabler and activation system for plumbing fixture A flush valve operating means having a housing with a sleeve assembly therein and a piston actuating means within the sleeve, the housing having two fluid inlets and the sleeve having a by-pass means for diverting fluid from one side of the piston to the ... | 01/09/1990 |
| 4872393 | Steering gear with recirculation check valve A vehicle steering for turning the steerable wheels of a vehicle having a fluid motor with a housing defining a fluid chamber and a piston in the chamber dividing the chamber into first and second chamber portions. A rotatable steering input member is sup... | 10/10/1989 |
| 4828068 | Hydraulically power assisted steering gear with pressure relief stop Rack and pinion steering gear with hydraulic power assist that is reduced as the vehicle wheels approach their positive wheel stops so that hydraulic loads on the steering gear and linkage are reduced and the power steering pump is not forced to excessive... | 05/09/1989 |
| 4706781 | Fluid-operated cylinder with cushioning flow rate control valve means A fluid-operated cylinder to be used as a load lifting cylinder includes a cylinder casing defining a cylinder bore between two opposed ends, one of which ends is provided with a fluid supply/discharge port, a piston unit having a piston element and a pis... | 11/17/1987 |
| 4703819 | Full hydraulic power steering system A full hydraulic power steering system for a forklift truck is disclosed wherein in order to correct the position of a steering wheel in relation to an actuator for a steered wheel, hydraulic fluid is discharged from a portion of hydraulic fluid line mean... | 11/03/1987 |
| 4687449 | Staged hydraulic trim-tilt system A hydraulic trim-tilt system for an outboard motor (10) utilizes a first pilot operated relief valve (48) in one trim piston (21) to limit the stroke of the trim pistons (21, 22) under load. After the trim pistons have reached the top of their stroke, und... | 08/18/1987 |
| 4591177 | Oleodynamic steering control device An oleodynamic steering control device for vehicles having a straight traveling stabilizer, the device comprising a cylindrical member containing a reciprocatable or rotatable element connected to the main steering system and operative to generate a fluid... | 05/27/1986 |
| 4589627 | Pressure medium actuated valve The pressure-medium-actuated valve has a pressure medium inlet, a pressure medium outlet and a cylinder. A piston which is connected to a lid is movable in the cylinder and subdivides the cylinder into a first piston chamber and a second piston chamber. T... | 05/20/1986 |
| 4480528 | Trigger valve for pneumatic nailing machine An improved trigger valve for a pneumatic nailing machine is disclosed. A communication hole between the main air chamber and the pilot air chamber is made as small as possible. This allows the trigger valve to return in a delayed manner so that the head ... | 11/06/1984 |
| 4457210 | Rotary actuator with energy conservation An energy conserving air motor with rotary actuation includes a pair of cooperating different diameter pistons coaxially arranged and connected rigidly to one another by a central connecting member provided with spur gear section adaptable of receiving a ... | 07/03/1984 |
| 4446939 | Tiltcab truck with hydraulic lost motion Disclosed is apparatus for permitting hydraulic lost motion between the push chamber and the pull chamber of the tilt cylinder(s) for a tiltcab truck. The apparatus comprises a pilot-operated check valve having a through passage (a) which is part of a hyd... | 05/08/1984 |
| 4319705 | Fastener driving tool A tool for driving fasteners includes a casing defining a nose portion and a handle portion within which is a reservoir for pressurized fluid. A driver is mounted in the nose portion that is reciprocated by a piston attached thereto and an assembly for re... | 03/16/1982 |
| 4294391 | Fastener driving tool A tool for driving fasteners includes a casing defining a nose portion and a handle portion within which is a reservoir for pressurized fluid. A driver is mounted in the nose portion that is reciprocated by a piston attached thereto and an assembly for re... | 10/13/1981 |
| 4240620 | Gripping arrangement A gripping arrangement includes a gripping member operatively connected with a differential both-side acted piston movable in a pneumatic or hydraulic cylinder. The piston stroke includes a first step and a second step. The pressure acted upon the piston ... | 12/23/1980 |
| 4226167 | Air-spring return air cylinder The use of the air-spring in automatically retracting (or extending) an air cylinder after it was extended (or retracted) by the air pressure supplied from the compressed air line is disclosed.... | 10/07/1980 |
