Rotary tool
US8851960B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 2011 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Oct 14, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25F5/006
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hand-held rotary tool is provided which can offer improved usability while realizing reduction of vibration of a tool body. The rotary tool has a tool body, a drive shaft disposed in the tool body, a driven shaft to which a tool bit is attached, an Oldham's coupling that transmits rotation of the drive shaft to the driven shaft, and an elastic element disposed between the driven shaft and the tool body. The driven shaft is prevented from moving in a longitudinal direction of the driven shaft relative to the tool body and allowed to move in a direction transverse to the longitudinal direction of the driven shaft relative to the tool body. During this relative movement, power transmission from the drive shaft to the driven shaft is maintained via the Oldham's coupling. The elastic element absorbs the movement of the driven shaft relative to the tool body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.