Locking mechanism for a rotary power machine
US4467896A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1983 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Jun 17, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25F5/001
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A locking mechanism for a rotary power machine, such as a hand-held power tool, includes a housing-mounted locking pin manually actuatable from a retracted position to an extended, operative position in which the lock pin is received within a pin-receiving bore formed in one of the power transmitting components of the machine. A wedge-like cam or ramp is positioned adjacent to the pin-receiving bore to engage the extended end of the lock pin when the rotating components of the machine are in motion to lift the lock pin away from the pin-receiving bore to prevent accidental engagement of the locking mechanism while machine components are moving. In the preferred embodiment, an output gear is provided with a plurality of ramps and associated pin-receiving bores and is formed as a unitary part using powdered metal fabricating techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.