Bicycle Cranks Composed of Composite Material and Metal Parts and Method for Making the Same
OwnerDouglas Chianginventor
Life of this patent
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Abstract
A method for making a crank of a bicycle includes preparing a first prepreg material and a second prepreg material, a first connector and a second connector, and a bladder in a mold insert. The first and second connectors are separated from each other. The first and second connectors are buried in the first prepreg material and includes an extension extended between the first and second connectors. The bladder is curved around the first prepreg material. The first prepreg material, the first and second connectors are buried in the second prepreg material. Then, heat-pressing the first and second prepreg materials, the first and second connectors, and the bladder.
Claims8
A method for making a crank of a bicycle comprising:
- preparing a first prepreg material and a second prepreg material, a first connector and a second connector, and a bladder in a mold insert, with the first and second connectors separate from each other, with the first and second connectors buried in the first prepreg material and the first prepreg material including an extension therebetween, with the bladder curved around the first prepreg material and the first and second connectors and having a first portion disposed on a right side of the first prepreg material and a second portion disposed on a left side of the first prepreg material, and with the first prepreg material, the first and second connectors, and the bladder buried in the second prepreg material;
- and
- heat-pressing the first and second prepreg materials, the first and second connectors, and the bladder.
Dependencies are inferred from the claim text.