Accessory clamp and spindle lock mechanism for power tool
US10682736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2017 |
| Grant date | Jun 16, 2020 |
| Priority date | — |
| Expiry date | Feb 17, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B55/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A power tool is provided including a motor driving a shaft and a drive spindle. The drive spindle includes an outer spindle rotatably driven by the shaft and an inner spindle disposed within the outer spindle. The outer spindle includes an end portion defining an engagement surface for mounting a working accessory, and the inner spindle is axially moveable along a longitudinal axis of the outer spindle but rotationally fixed to the outer spindle. A spring member is arranged to apply a biasing force on the inner spindle in a first direction with respect to the outer spindle. Securing the working accessory on the drive spindle against the engagement surface of the outer spindle applies an axial force on the inner spindle in a second direction opposite the first direction with respect to the outer spindle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.