Vehicle body frame of motorcycles
US7258186B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2003 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Nov 26, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K19/20
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
There is provided a vehicle frame structure for a motorcycle having an appealing appearance, which structure can be assembled lightweight and compact in size and at a reduced cost. The vehicle frame structure includes a head block (2) including a head tube (3), a main frame (11) forked leftwards and rightwards from the head block (2) to form a pair of main frame half portions (11a, 11b) extending rearwardly thereof, and swing arm brackets (8) extending downwardly from rear ends of the main frame half portions (11a, 11b). An inner frame portion (21) of the main frame (11) and the swing arm brackets (8) in their entirety or respective inner portions of the swing arm brackets (8) are integrally formed by an inner member (19) prepared from a metal casting, and at least an outer frame portion of the main frame (11) is formed by an outer member (20) prepared from a sheet metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.