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 |
| 7237449 | Drive mechanism and movable table unit provided with the same A drive mechanism is interposed between two members to make the members move relatively with respect to each other. At least one of the two members is guided to move linearly. The drive mechanism comprises: cam followers that are rotatably supported on one of the tw... | 07/03/2007 |
| 7222682 | Chain drive system A downhole tractor is provided that includes a motor, at least one rotatable screw powered by the motor, and a chain engageable with the at least one rotatable screw, whereby rotation of the at least one rotatable screw moves the chain. ... | 05/29/2007 |
| 6955747 | Cam driven paddle assembly for a plating cell The present invention overcomes the drawbacks and limitations described above by providing a paddle assembly having a paddle that moves in a bidirectional fashion for agitating solution in a container of a plating cell. A follower is coupled to the paddle. The follo... | 10/18/2005 |
| 5860324 | Mechanical drive assembly incorporating counter-spring biased, radially-adjustable rollers An anti-friction nut for engagement with an elongate shaft-like member having a groove with opposed walls. The nut body has an axial bore which is adapted to receive the shaft-like member, and a radial bore communicating with the axial bore. The radial bo... | 01/19/1999 |
| 5709127 | Mechanical oscillator A mechanical oscillator including a shaft having an endless groove in its periphery, a nut body carried by and slidable along the shaft at the location of the endless groove, and a roller pin carried by the nut body, having a nose portion extending into a... | 01/20/1998 |
| 5680795 | Mechanical drive assembly incorporating counter-spring biassed radially-adjustable rollers An anti-friction nut for engagement with an elongate shaft-like member having a groove with opposed walls. The nut body has an axial bore which is adapted to receive the shaft-like member, and a radial bore communicating with the axial bore. The radial bo... | 10/28/1997 |
| 5644950 | Heavy-duty mechanical oscillator A heavy-duty mechanical/oscillator utilizes a shaft having an endless cam groove in its periphery, and a nut body carried by and slidable along the peripheral portion of the shaft. A roller pin on the nut body, extends into and engages a wall of the endle... | 07/08/1997 |
| 5636705 | Apparatus for moving a work platform along a rail The scaffolding comprises a post having a plurality of vertically aligned and equally spaced studs protruding on one of its surfaces. A frame supporting a work platform can move along the post, a sleeve being attached to the frame for guiding it along the... | 06/10/1997 |
| 5592852 | Mechanical oscillator A mechanical oscillator including a shaft having an endless groove in its periphery, a nut body carried by and slidable along the shaft at the location of the endless groove, and a roller pin carried by the nut body, having a nose portion extending into a... | 01/14/1997 |
| 5191805 | Anti-friction nut A light-weight miniature, high-speed, light-load anti-friction nut assemblage adapted to receive a screw. The assemblage has a nut body with an axial bore through which the screw can pass, and a second bore extending transversely of its axis and intersect... | 03/09/1993 |
| 4960007 | Cam-helical actuator with backlash elimination The fluid-powered actuator having a body, an axially extending rotatable shaft with a plurality of helical grooves, and an annular piston sleeve reciprocally mounted within the body and receiving the shaft therethrough. The piston sleeve has a plurality o... | 10/02/1990 |
| 4665765 | Anti-friction worm gear speed reducer and needle screw An anti-friction worm-worm gear type speed reducer torque converter is disclosed. The speed reducer has a rotatably mounted worm gear adapted to mesh with a rotatably mounted worm incorporating a plurality of circulating rolling elements. In one embodimen... | 05/19/1987 |
| 4567979 | Cam follower assembly for indexing conveyors In an indexing conveyor that employs a helically grooved drive shaft to propel a shuttle carriage that is, in turn, coupled with a product-bearing dolly, the carriage is provided with a drive connection assembly comprising a pair of follower rollers that ... | 02/04/1986 |
| 4541297 | Rotating shaft of roller screw structure and its driven device A rotating shaft is provided with a large number of support shafts arranged on a helical line, and the support shafts are provided with rotatably supported rollers driven members are provided which are interlockingly engaged mutually with the rotating sha... | 09/17/1985 |
| 4440038 | Lead screw and follower assembly A lead screw and follower assembly employs a specially formed helical thread and a follower assembly employing bearings which ride on the several surfaces of the helical thread, thereby providing essentially frictionless motion and also preventing deflect... | 04/03/1984 |
| 4395924 | Flexible rotary to linear and non-linear drive mechanism A flexible shaft has its outermost layer of windings provided with a helical gap along length of the shaft. The helical gap is formed by a flexible shaft winding machine which is programmed to uniformly intermittently discontinue coiling the windings very... | 08/02/1983 |
| 4290344 | Gear assembly A gear assembly: a gear assembly which is used in a power assisted steering system of a vehicle. The gear assembly comprises a piston (1) within a cylinder (2), the piston (1) being axially displaceable in response to an input shaft (4). The piston (1) is... | 09/22/1981 |
| 4285249 | Apparatus for causing axial movement This disclosure relates to drive apparatus including a rotatable member and a relatively fixed or non rotatable member. The two members are coupled by a thread type arrangement whereby one of the two members is moved linearly relative to the other when th... | 08/25/1981 |
| 4274296 | Self-centering self-aligning anti-friction rotor and screw A self-centering, self-aligning, anti-friction power transmission mechanism comprising a rotor cooperable with a screw to convert rotary movement to linear movement and vice versa. The rotor has one or more convolutions of rollers having their axes arrang... | 06/23/1981 |
| 4008625 | Floating nut construction A zero-backlash anti-friction nut construction for engagement with the threads of a screw. The device comprises a pair of nut sections having aligned through bores to receive the screw, pairs of rollers respectively carried by the sections and having gene... | 02/22/1977 |
