Three-piece stem of bicycle
US9616962B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2014 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Aug 29, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2078
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A three-piece stem of a bicycle includes a stem body, a bottom pipe, and a middle element. A first torus portion and a second torus portion are disposed at two ends of the stem body, respectively. The bottom pipe is disposed in the second torus portion of the stem body. The middle element is disposed between the second torus portion of the stem body and the bottom pipe. A connecting element couples the second torus portion of the stem body, the bottom pipe, and the middle element together, such that the second torus portion of the stem body, the bottom pipe, and the middle element are fixed tightly to a front forked upright pipe collectively, thereby enhancing the ease of assembly and the binding strength upon completion of assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.