Breather ventilation system of power-transmission casing for use in motorcycle
US4468979A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1981 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | May 11, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2186
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A breather passage is provided to perform breathing function for both two casings, one being a first casing housing therein a power-transmission means and the other being a second casing housing therein a gear-transmission mechanism. The breather passage is defined between interfacing surfaces of a main body and a cover those providing the second casing. A gasket is interposed between the main body and the cover so as to devide the breather passage into two passages. The breather passage has one end formed with a first breather hole opened to an atmosphere and the other end formed with a second breather hole opened to an interior of said second casing. The breather passage is further formed with a branch passage at the position rearward from said second breather hole to permit liquid communication between an interior of the first casing and the atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.