Braking system of chain saw
US4156477A · kind A · utility
11Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1978 |
| Grant date | May 29, 1979 |
| Priority date | — |
| Expiry date | Feb 22, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D49/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A braking system including a sensing lever operated when the forward portion of a chain saw moves upwardly with a jerk due to a kickback phenomenon or the hand of an operator slips from a handle during operation, a brake device, and a direct-acting interlocking member connecting the sensing lever to the brake device. A force exerted on the sensing lever and a force of a spring locking the sensing lever are both transmitted to the brake device through the interlocking member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.