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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 7398843 | Reconfigurable robot drive A robot including a robot body, a plurality of wheels on the robot body for propelling the robot body, and an axle for each wheel. Each wheel is configured to alternately attach to an axle at or proximate the center of the wheel for high efficiency mobility on flat ... | 07/15/2008 |
| 7329167 | Multi-axle running toy and multi-axle running toy set A multi-axle running toy includes: a flywheel to serve as a driving source; three or more drive axles driven by rotation of the flywheel; a gear train to transmit the rotation of the flywheel to the drive axles; and traveling wheels installed on both ends of each of... | 02/12/2008 |
| 7125029 | Wheel assembly A wheel assembly is provided, particularly for use with a vehicle, for example a scooter or a bicycle and the like, for operation in both eccentric and concentric modes. The wheel rim of the assembly rotatably and concentrically supports a wheel hub thereon. An offs... | 10/24/2006 |
| 7097596 | Exercise bicycle An exercise bicycle includes a frame and a driven wheel. The frame has a base, a driven member which has an end pivotably connected to the base, and a contacting portion disposed on the driven member. The driven wheel, which is rotatably connected to the base, inclu... | 08/29/2006 |
| 6371571 | Adjustable eccentric wheel hub assembly An adjustable eccentric wheel hub assembly includes a wheel hub having an eccentric through hole, a core member mounted in the wheel hub, an axle mounted in an eccentric through hole of the core member, and an adjustment wheel mounted on the axle tube and... | 04/16/2002 |
| 6186918 | Adjustable axle apparatus An adjustable axle assembly for use with a wheel comprises a first hub defining a first aperture in an off-centered position so geometric centers of the first aperture and the first hub are eccentrically located, the first aperture adapted to receive an a... | 02/13/2001 |
| 6059304 | Suspension device with crank type axle The invention provides a simplified, light-weight, and an inexpensive suspension device which is capable of absorbing and mitigating shock and oscillation caused by projections and recesses on the road surface. To achieve the above object, the invention h... | 05/09/2000 |
| 6024367 | Eccentric device for gear set of bicycle An eccentric device of a gear set of a bicycle is described. The device includes a braking disk, a transmission gears set, an eccentric shaft set and a hub assembly. The eccentric shaft set is disposed within the hub assembly and can be rotated with respe... | 02/15/2000 |
| 5997019 | Propelled device with wheels and pedal elements A manually propelled device includes two base modules having at least two wheels interconnected by a pedal element. The device is provided with at least four wheels which are parallel with each other. The pedal elements each interconnect two of the wheels... | 12/07/1999 |
| 5909889 | Vehicles having different-sized wheels and hub eccentricities Vehicles having wheels of different diameter sizes that are mounted with different eccentricities relative to each other. The twofold variability afforded by the wheel diameter and eccentricity disparities allows a vast array of possible two, three and fo... | 06/08/1999 |
| 5899474 | Frequency-accelerated velocipede The present invention provides a rider-propelled vehicle that includes a frame capable of supporting a rider, an eccentrically-mounted front wheel, and a concentrically-mounted rear wheel. In one embodiment, the rider propels the vehicle using the cyclic ... | 05/04/1999 |
| 5556116 | Adjustable riding toy with interchangeable back ends Adjustable riding toys are provided in both bicycle and tricycle forms. The bicycle and tricycle each have the same front end with only differing back ends. Each back end connects to the front end. One back end has two wheels, while the other back end has... | 09/17/1996 |
| 5553878 | Adjustable riding toy with wave ride wheel Adjustable riding toys are provided in both bicycle and tricycle forms. The tricycle and bicycle have at least one wave ride wheel allowing a rider to change between a smooth ride and an up and down ride. Both rear wheels on the tricycle are provided with... | 09/10/1996 |
| 5553879 | Adjustable riding toy with an adjustable axle height connection Adjustable riding toys are provided in both bicycle and tricycle forms. The bicycle and tricycle each have an adjustable height axle connection. Multiple axle apertures are provided on mounting arms for adjustably receiving an axle. Methods of adjusting t... | 09/10/1996 |
| 5249847 | Eccentric wheel of a bicycle An eccentric wheel of a bicycle including a wheel body, a pair of tracks formed in parallel in the wheel body, one or more holes formed in each of the tracks, a block slidably engaged between the tracks for supporting a wheel axle of the bicyle, a pair of... | 10/05/1993 |
| 5002295 | Unicycle having an eccentric wheel A wheel of a unicycle has two beams disposed in parallel in a rim. A bolt is extended between the beams. The head of the bolt is disposed away from the geometric center of the wheel and the bolt extends through the geometric center of the wheel. Two plate... | 03/26/1991 |
| 4917394 | Bicycle with an eccentric rear wheel A bicycle with an eccentric rear wheel including a inner rim with two plates set in parallel with each other across a diameter of the inner rim and an outer rim. A sleeve with a seat formed on it is provided around a hub of the eccentric wheel and serves ... | 04/17/1990 |
| 4755005 | Axle-variating means for eccentric and concentric wheel A hub of a bike or multiple-wheel cycle is formed with an eccentric wheel or axle in the hub and the eccentric axle having a chain sprocket thereon rotatably mounted with a spindle fixed on a frame fork so that upon the rotation of the axle, the hub and a... | 07/05/1988 |
| 4669746 | Resilient bicycle A resilient bicycle having a front wheel, a rear wheel, and a frame structure, including a head tube with a down strut. A level extension stem is provided at an end of the down strut and a tread board is fixed on top of the level extension stem for being ... | 06/02/1987 |
| 4602822 | Apparatus for varying eccentrically or centrically the shaft of the bicycle wheel Disclosed is an apparatus for varying eccentrically or centrically the shaft of the bicycle wheel in order that the bicycle can run up and down like horseback riding beside regular level riding. The apparatus has an eccentric hub including a shaft housing... | 07/29/1986 |
| 4588232 | Apparatus for varying eccentrically of the axle of a bicycle wheel Disclosed is an apparatus for varying eccentrically or centrically the shaft of the bicycle wheel in order that the bicycle can run up and down wavy manner like horseback riding beside regular level riding. The apparatus has an eccentric hub including a s... | 05/13/1986 |
| 4518176 | Vehicle with eccentrically mounted wheels A vehicle having a chassis divided into a front and rear section pivoted together. At least one of the sections having a crank driving system consisting of a pair of driving wheels attached with opposite eccentricity to a common driving shaft, which shaft... | 05/21/1985 |
| 4201396 | Roller-skate bicycle for amusement, moving by the swinging movement of the driver A roller-skate bicycle for stimulating the whole muscle-system of the driver, who, through his own swinging movement onto the rear wheel transmits the operating push to the linkages.... | 05/06/1980 |
| 4162084 | Exercising bicycle A bicycle is provided with wheels whose axle hubs are eccentric with respect to the wheel geometric center. A bicycle with such wheels and in forward motion will cause its rider to also oscillate up and down as the wheel axles rise and fall due to the whe... | 07/24/1979 |
