Electric hand power tool
US6918450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2004 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Feb 25, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D2216/0038
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electric hand power tool formed as a hammer drill or an impact hammer drill has a housing, a drive transmission received in the housing and having an intermediate transmission for turning a tool, an impact mechanism with a swinging drive for delivering axially oriented impacts to the tool, and a drive shaft, a transmission toothed wheel fixed on the transmission shaft for turning the latter, a drive bearing provided on the swinging drive and loosely arranged on the transmission shaft, a manually releasable coupling provided for switching off the impact mechanism and connecting the drive bearing with the transmission shaft for a rotation transmission, a crank-shaped flat switching plate provided for releasing the coupling and turnably supported on a receiving dome arranged above the transmission shaft, a drive pin operative for turning the switching plate under the receiving dome and engaging the switching plate, and a handle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.