Composite bicycle frame with y shaped tubular configuration
US5544907A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1995 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Mar 31, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K19/16
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A composite bicycle frame containing a hollow slanted-Y-shaped front frame portion, a hollow upper support paw and a hollow lower support paw. The hollow slanted-Y-shaped front frame portion comprises: (1) a generally common junction; (2) a main tube connected between the front fork assembly of the bicycle and a middle portion of the common junction in a slanted manner; (3) an upper branch tube connected between the seat assembly of the bicycle and an upper portion of the common junction in a slanted manner; and (4) a lower branch tube connected between the pedal support assembly of the bicycle and a lower portion of the common junction in a slanted manner. The hollow upper support paw is connected between the seat assembly and the rear wheel shaft assembly of the bicycle, and the hollow lower support paw connected between the pedal support assembly and the rear wheel shaft assembly. A set of generally hollow front, seat tube and bottom bracket junctions are provided for connecting, respectively, (1) between the hollow main tube and the head tube, (2) among the hollow upper branch tube, the seat tube sleeve, and the upper support paw, and (3) among the hollow lower branch tube, the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.