Power transmission mechanism
US6447420B1 · kind B1 · utility
12Cited by
10References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 2000 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | May 19, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D25/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A first friction clutch (54) is constructed as a negative type friction clutch and a second friction clutch (55) is constructed as a positive type friction clutch. Spring constant of a second spring (75) is made smaller than that of a first spring (65). Therefore, in the middle stage of switching the first and second friction clutches (54, 55), both of these first and second friction clutches (54, 55) enter in a connection state. Consequently, a driven member (56) is driven through either or both of the first and second clutches by a driving shaft, and the free rotation state does not occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.