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 |
| 7707924 | Linear actuator A groove is provided to the rear of an inner wall of a cylinder. A locking ram capable of freely sliding in a radial direction and a cam rod having a profile changing with a transition from the rear to the front from a small diameter part to a large diameter part th... | 05/04/2010 |
| 7216581 | Piston locking actuator A locking actuator may be locked in an extended position. A piston with a first and a second end defines a recess that originates proximate to the first end. A strut is adapted to at least partially nest within the recess and the strut is adapted to hold at least on... | 05/15/2007 |
| 7131518 | Motion control apparatus with backlash reduction A motion controller for use with a rod (10A, 10B, 10C) has a backlash reducer (88A, 88B, 88C) that substantially reduces or eliminates the space created after manufacturing parts with specified tolerance dimensions to substa... | 11/07/2006 |
| 7100604 | Latching system and method for pressure chambers A latching mechanism for a pressure chamber for hypobaric use is disclosed. The mechanism includes one or more pin modules positioned on a periphery of a door of the pressure chamber, the door being adapted to open into the chamber and abut a frame of the pressure c... | 09/05/2006 |
| 7097011 | Park lock activated by fluid The present invention concerns a parking lock for combination with a service brake actuator for a vehicle, preferably a heavy road vehicle. The service brake actuator comprises a fluid actuated piston having a piston rod. The parking lock surrounds the piston rod of... | 08/29/2006 |
| 6612221 | Piston-cylinder device with piston rod locking means A pressure medium activated piston-cylinder device comprises a cylinder with two end walls both having pressure medium communication ports, a piston movably guided in the cylinder and connected to a piston rod which extends out of the cylinder through a s... | 09/02/2003 |
| 6290296 | Anti-rattle pad A chair height control mechanism has a gas cylinder with a valve control finger extending from an upper end overlain by a tilting actuator. A resilient pad is adhered to the upper end of the gas cylinder surrounding the valve control finger and maintains ... | 09/18/2001 |
| 6178870 | Fluid pressure cylinder with a lock mechanism This fluid pressure cylinder with a lock mechanism is adapted to provide, on the lock mechanism cover, an area where valves for controlling the cylinder and lock mechanism can be installed. In the cylinder, a brake shoe grips a piston rod 6 via balls held... | 01/30/2001 |
| 6164186 | Jack for bolting and unbolting A jack (1) has a jack body (2) with a peripheral wall (3) which forms a jack chamber (4). Two pistons (5a, 5b) attached to piston rods (6) are movably mounted in the jack chamber. The jack (1) has an automatic locking section (MV) to lock the two pistons ... | 12/26/2000 |
| 5761984 | Braking device for a fluid power actuator A fluid pressure operated braking device for a piston rod. The braking device includes a clamp sleeve and a cam member spring biased axially in a direction to actuate the clamp sleeve to a clamp condition, and a fluid pressure operator that provides a hyd... | 06/09/1998 |
| 5193431 | Device for operation of a sliding door member A device for operation of a sliding door member, the device being movable between an open position in which the door member is open and a closed position in which the door member is closed. The device includes a pneumatic cylinder having an actuating pist... | 03/16/1993 |
| 5129319 | Safety device for ink forming rollers In a safety device for ink forming rollers, each of the rollers is supported on a frame through a moving shaft movable in an axial direction to remove the ink forming roller, a safety pin is provided which is urged and supported on the frame, the moving s... | 07/14/1992 |
| 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 |
| 4899644 | Fluid cylinder assembly for robot actuators A fluid cylinder assembly comprising a fluid cylinder having ports disposed at opposite ends thereof communicable with a source of fluid under pressure, a piston disposed in said cylinder having a first rod section extending through an end of said cylinde... | 02/13/1990 |
| 4896586 | Piston stop assembly An assembly for stopping and retaining a floating piston within a closed cylinder includes a plurality of retaining ring segments which are seated within a groove provided in the internal wall of the cylinder. The retaining ring segments are held securely... | 01/30/1990 |
| 4874065 | Parking brake system for railway vehicles A fluid brake system has a brake pipe, a control valve device, a brake cylinder and a brake rigging, and in addition, a handbrake pipe, a protective device, a fluid pressure releasable spring handbrake cylinder, and a manually operable handbrake device fo... | 10/17/1989 |
| 4854223 | Pneumatic or hydraulic drive for opening and closing of doors The invention is directed to a penumatic or hydraulic drive for opening and closing of doors, in which the linear motion of a double-acting piston 5 driven by a pressure medium is converted into a rotary motion of a spindle 2 through a piston rod 6 and a ... | 08/08/1989 |
| 4796513 | Spring brake cylinder A sensing means is provided to indicate an operating condition of a spring brake cylinder assembly in which such operating condition may be one of a brake applied and a brake release position. The sensing means engages a clutch control mechanism which inc... | 01/10/1989 |
| 4785718 | Spring brake cylinder A spring brake cylinder assembly in which a pushrod connectable to a brake assembly is extendable from an end of such cylinder housing the piston member. The spring brake cylinder further includes a clutch release mechanism for manually releasing the brak... | 11/22/1988 |
| 4781105 | Spring brake cylinder A spring brake cylinder assembly having a spring-biased piston positioned therein. A pushrod is engaged with the piston through a clutch, which clutch includes both a clutch control device and a clutch operating mechanism that can manually release a brake... | 11/01/1988 |
| 4777867 | Releasable spring ring device for a spring-operated brake actuator A device for discontinuing and automatically restoring the operational function of a spring brake actuator. The device includes a piston with a piston rod and a spring for actuating the piston and piston rod in a working direction for brake application at... | 10/18/1988 |
| 4733602 | Hydraulic brake actuator with parking brake A hydraulic brake actuator including a hydraulic parking brake that can be applied by mechanically locking up either a normal service brake application or a hand pump operated brake application. The lock-up mechanism includes a friction collar that surrou... | 03/29/1988 |
| 4671353 | Apparatus for releasing a cementing plug Apparatus for releasing a cementing plug. A first cylinder mounted on a plug container includes a plunger received therein which is longitudinally moveable into the plug container for supporting a cementing plug. A second cylinder received over the first ... | 06/09/1987 |
| 4550811 | Manually releasable parking brake device A manually releasable, spring-applied, air-released parking brake device has a hollow guide rod and a non-rotatable spindle connectable to the brake rigging extending through a portion of a cylindrical housing. On one end of the guide rod is secured a por... | 11/05/1985 |
| 4491059 | Fluid actuator with manual lock release and lock position sensor Fluid actuator includes a lock mechanism for releasably locking the actuator against movement, and a lock release assembly including a lock piston engageable with a toggle linkage upon application of fluid pressure to the lock piston to release the lock m... | 01/01/1985 |
| 4481864 | Hydraulic jack with mechanical safety lock A double-acting hydraulic jack, comprising a hollow piston reciprocable in a surrounding cylinder, includes a tubular shaft extending axially inside and carrying a nut of the circulating-ball type which coacts with a screw coaxially disposed in that shaft... | 11/13/1984 |
| 4463661 | Fluid actuator with remote lock release assembly Actuator includes a lock mechanism for locking the actuator against movement in one end position, and a separate lock release assembly exteriorly mounted on the side of the actuator housing. The lock release assembly includes a toggle linkage directly eng... | 08/07/1984 |
| 4420066 | Cam lock slack adjuster A brake cylinder comprises a brake actuator device having a fluid operable piston and a coaxial adjoining hand brake operable device for axial actuation of a coaxial tubular push rod, there being a slack adjuster for selectively adjusting the retraction o... | 12/13/1983 |
| 4392556 | Actuator locking device A fluid pressure actuator which locks in the extended position. The lock is a roller operated, dual segment pawl mechanism that unlocks in response to a pressure difference between extend and retract pressures. The two lock segments, chamfered for engagem... | 07/12/1983 |
| 4323001 | Operating and bracing jack having an internal locking mechanism A bracing jack comprising a cylinder and a jack bar slidable in the cylinder from a bar extended position to a bar retracted position, the jack having an internal locking mechanism including a hydraulic and a mechanical actuator for unlocking under load.... | 04/06/1982 |
| 4240332 | Fluid operated locking actuator A fluid pressure actuator which locks in the extended position. The lock is a roller operated, dual segment pawl mechanism that unlocks in response to a pressure difference between extend and retract pressures. The two lock segments, chamfered for engagem... | 12/23/1980 |
| 4155433 | Stroke-limiting stop for positioning device A stop member for limiting the range of adjustment provided by a positioning device. The positioning device is of the type wherein a piston is adjustable to various axial positions within a cylinder. The stop member has the form of a cup, coaxial with the... | 05/22/1979 |
