Collapsable compact bicycle

Details Collapsable compact bicycle Collapsable compact bicycle

1992-03-11

1994-05-17

Mitchell, David M.

Land vehicles

Wheeled

Occupant propelled type

384545, 403 66, 403325, B62K 1500

Patent

active

053121252

ABSTRACT:
A collapsible bicycle comprises a frame, a front and rear wheels rotatably attached thereto, and a drivetrain for transmitting torque to the rear wheel, with the frame including a movable structure on which the rear wheel is attached. The frame carries a pair of lower stay elements on a lower portion thereof and a fork member on an upper portion thereof with the prongs of the fork member defining a pair of upper stay elements. The front ends of the lower stay elements are adjoined with respective pivot rings attached to a bottom bracket of the frame so as to enable the rotation of the movable structure thereabout, while the male and female elements of a quick-release type connector are provided on the shank portion of the fork member and an upper portion of a seat tube of the frame to enable the fixing of the movable structure thereto. The frame is further provided with an arcuate down tube adapted for the positioning thereunder of the rear wheel and movable structure when the bicycle is in a compacted form. This being accomplished by first disconnecting the fork member from the frame and then rotating the movable structure about the bottom bracket until the rim of the rear wheel is in proximity with the down tube.

REFERENCES:
patent: 3710883 (1973-01-01), Rizzo
patent: 4182522 (1980-01-01), Ritchie
patent: 4198080 (1980-04-01), Carpenter
patent: 4202561 (1980-05-01), Yonkers

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