Shaft drive type motorcycle
US8474566B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2009 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Aug 14, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K25/283
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A shaft drive type motorcycle includes a drive shaft for permitting a reduction in the vehicle weight. The shaft drive type motorcycle includes a gear box provided at a rear part of a swing arm with a bearing provided between the gear box and a rear wheel axle. The bearing includes an outer race and balls and an inner race operative provided to rotatably support the rear wheel axle. A presser flange is provided between the rear wheel axle and a rear wheel that includes a hollow cylindrical part pressing the inner race in the axial direction of the rear wheel axle. A flange part is provided as part of the presser flange to which a brake disc is mounted. A labyrinth structure is provided for making it difficult for oil from leaking out of the gear box.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.