Method of making a single rear fork bicycle frame

Details Method of making a single rear fork bicycle frame Method of making a single rear fork bicycle frame

1995-05-19

1997-10-14

Crispino, Richard

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156156, 156245, 156285, 156293, 1563043, 1563071, 264 466, 264250, 264258, 264314, 264515, 264572, B29C 4310, B29C 6502, B32B 520, B32B 528

Patent

active

056767803

ABSTRACT:
A composite legal type bicycle frame is disclosed which contains a front frame portion and a rear frame portion. The front frame portion contains a central main and a plurality of legs for connecting the central main with various components of the bicycle, and the rear frame portion contains a rear fork, which consists of a left rear branch and a right rear branch. The left and right rear branches are first cured and glued together at respective abutting surfaces thereof to form an integral rear fork before they are adjoined with the front frame portion, via prepregs and using a cocuring procedure. The left and right rear branches are formed to contain cross-shaped matching protrusion and recess, respectively, on the abutting surfaces thereof, so as to enhance the integrity of the integral rear fork. As a result, a great flexibility of design options can be obtained. For example, the rear fork can be connected to one of the legs but not to the central main. Also, the front frame portion can be designed such that one of the legs is connected indirectly to the central main via another leg, and not directly connected to the central main.

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