Trigger device for chain brake
US6842987B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2000 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Mar 30, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27B17/083
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A brake triggering device with a pivotably mounted trigger arm (1) located in connection to a handheld working tool's, mainly a chain saw's (2), rear handle (3), with a throttle control (4) and a handle opening (5) located below the handle (3), so that the trigger arm (1), when the saw changes inclination in relation to the operator's forearm, e.g. at the event of kickback or fall, is actuated by the operator's hand or arm, whereby the trigger arm (1) via a transfer mechanism actuates a brake (9) so that this stops the movement of the saw chain. The pivot (10) of the trigger arm is located in connection to a front (11) or a bottom (12) side of the handle opening (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.