Bicycle pedal crank
US4811626A · kind A · utility
57Cited by
4References
3Claims
0Family size
Inventor
Key dates
| Filing date | Oct 23, 1987 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Oct 23, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2164
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bicycle pedal crank is formed by three separate interassembled elements, namely a crank arm and two end-pieces. The crank arm consists of an element of composite material formed by overmolding of a synthetic resin on a tubular core of reinforcement fibers such as carbon fibers or aramide fibers. The end-pieces are manufactured separately and form respectively the crank hub and an end-piece for receiving the corresponding pedal spindle. The two end-pieces each have a tenon which is forcibly engaged and fixed within the corresponding end of the tubular element which forms the crank arm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.