Multi-speed power tool transmission
US6431289B1 · kind B1 · utility
164Cited by
16References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2001 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Sep 26, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/201
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A multi-speed transmission assembly for a rotary power tool. The transmission assembly includes a plurality of transmission stages, with at least two of the transmission stages employing a movable reduction element that permits the transmission stage to be operated in an active mode and an inactive mode. The movable reduction elements are coupled to a switching mechanism that switches the reduction elements in a predetermined manner to provide at least three-gear reduction or speed ratios.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.