Self-tightening rotary tool holding system
US10363609B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 5, 2017 |
| Grant date | Jul 30, 2019 |
| Priority date | — |
| Expiry date | May 31, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/17196
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool holding system for a rotary power tool is configured to clamp around a working tool when the working tool is inserted in the tool holding system. The tool holding system includes a sleeve having a frustroconical inner surface portion, a collet having frustoconical outer surface portion complementary to the inner surface portion, a spring mount operably connected to a motor for rotation by the motor, and a spring. The spring includes a first end portion operably connected to the collet to bias the collet toward a first position whereat the outer surface portion engages the inner surface portion, and a second end portion rotationally fixed with respect to the spring mount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.