Clutch mechanism for rotary power tool
US11519463B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2020 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | May 29, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2041/0646
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A clutch mechanism is used in a rotary power tool having a motor. The clutch mechanism includes an input member to which torque from the motor is transferred and an output member co-rotatable with the input member. The output member defines a rotational axis. A cam surface is formed on one of the input member or the output member. First and second compression springs are carried by the other of the input member or the output member for co-rotation therewith. A follower has a circular cross-sectional shape and is biased against the cam surface by the first and second compression springs. In response to relative rotation between the input member and the output member, the cam surface displaces the follower along a line of action coaxial or parallel with each of the first and second compression springs. The line of action does not intersect the rotational axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.