Adjustable bottom bracket assembly for bicycles
US4808147A · kind A · utility
12Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1987 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Jun 3, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K19/34
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An adjustable bottom bracket assembly for a bicycle comprises a body member and a wedge member, each having a circular cylindrical external surface in close fit with an internal circular cylindrical surface of a bottom bracket shell. The body and wedge members have abutting complementary planar wedge surfaces oriented obliquely to the axes of their cylindrical surfaces. A drive device, such as a screw, moves the body and wedge members axially to wedge them securely in an adjusted position in the bottom bracket shell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.