Land vehicles – Wheeled – Occupant propelled type
Patent
1994-01-10
1997-01-07
Johnson, Brian L.
Land vehicles
Wheeled
Occupant propelled type
475283, B62M 102
Patent
active
055908942
ABSTRACT:
A bicycle drive device is provided. The drive is composed of a ring gear, attached to the rear hub, and a chain wheel fixed on the axle of the rear wheel. The chain wheel is fastened on the outer surface of a unidirectional bearing so as to move in only a clockwise direction. On the inner plane of the chain wheel there are three base axles on which the planet gears are rotatively coupled. A sun gear is coupled to the inner surface of the unidirectional bearing for rotation in only a counter-clockwise direction. These gears mesh properly and form the new drive device. When the pedals are rotated clockwise to make the bicycle move forward, the planet gears would be driven counter-clockwise but are instantly locked by their meshing with the sun gear. This results in a non-interaction gear set and the bicycle would move forward without interference. As a bicycle coasts, with no pedal power input, the ring gear moves clockwise and drives the planet gears to rotate in a clockwise direction. In accordance with the sun gear's counter-clockwise rotation, the gear set does not interfere with the movement of the bicycle. When re-accelerating, the gear set locks instantly and thus transfers the pedal power instantly, at the beginning of the force-applying time period.
REFERENCES:
patent: 516933 (1894-03-01), Jacoby
patent: 4706982 (1987-11-01), Hartmann
patent: 4721015 (1988-01-01), Hartmann
patent: 4735430 (1988-04-01), Tomkinson
patent: 4955627 (1990-09-01), Hartmann
Johnson Brian L.
Johnson Victor E.
Klein David I.
Rosenberg Morton J.
LandOfFree
Bicycle drive device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bicycle drive device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bicycle drive device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1758916