Electric power tool having a drive mechanism that can be switched among drilling, percussion drilling, and chiseling modes of operation
US7273112B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2005 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Aug 30, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D2216/0046
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electric power tool has a drive mechanism switchable back and forth among a drilling, a percusion drilling, and a chiseling mode of operation; a drive shaft performing a rotary motion; a percusion mechanism provided with a drive bearing; a serrated sleeve supported axially displaceably in the drive bearing of the percussion mechanism and transmitting a rotary motion of the drive shaft to the drive bearing of the percusion mechanism when it is in an axial position corresponding to the chiseling or percusion drilling modes of operation; and an axially displaceable serrated shaft supported in the drive bearing, so that the serrated sleeve transmits to the serrated shaft the rotary motion of the drive shaft when the serrated shaft is in axial position corresponding to the drilling or percussion drilling modes of operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.