Electric tool
US8991516B2 · kind B2 · utility
2Cited by
29References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 2011 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Dec 16, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D2250/365
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electric tool includes a gripping portion, a working portion rotatably connected to the gripping portion about an axis, an output shaft moving in a reciprocating manner and accommodated in the working portion, and a gear box accommodated in the gripping portion for driving the output shaft. The gear box has an opening so that the output shaft is moveable from one end to the other end of the opening when the working portion is rotated relative to the gripping portion about the axis. A leakage-preventing device, such as a bushing, is arranged at the opening so that the lubricating grease can be avoided from leaking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.