Method for making bicycle frame by composite material
AssigneeUnitec Composite Technology Corp.
InventorsDavid Michael Anthony, Yu-Hsuan Chen
Life of this patent
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Abstract
A method for making bicycle frames includes a step of preparing initial parts by carbon-fiber sheets and inflatable bladders are inserted into the initial parts which are then arranged to a desired arrangement. The arranged parts are put in a mold which is heated under a certain pressure. The inflatable bladders are inflated by introducing air therein to push the carbon-fiber sheets against the inside of the mold. The carbon-fiber sheets are then solidified to form a front part of the bicycle frame. A rear part of the bicycle frame or the whole bicycle frame can also be made by the same method.
Claims6
A method for making bicycle frames, comprising:
- using carbon-fiber sheets to make a head tube, a seat tube, a top tube and a down tube so that the top tube and the down tube each comprise a hole for receiving the seat tube and that the seat tube comprises a bottom bracket at an end thereof;
- inserting inflatable bladders into the head tube, the seat tube, the top tube and the down tube;
- connecting the head tube, the seat tube, the top tube and the down tube to one another;
- putting the head tube, the seat tube, the top tube and the down tube in a mold;
- heating the mold and inflating the inflatable bladders, and removing the mold.
Dependencies are inferred from the claim text.