Impact power tool
US7523791B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2007 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Jan 29, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D2250/391
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An object of the invention is to provide an improved technique for lessening an impact force caused by rebound of a tool bit after its striking movement in an impact power tool. The representative impact power tool comprises a tool body, a hammer actuating member, a tool holder, a driving mechanism, a weight placed in contact with the hammer actuating member to move rearward by a reaction force transmitted from the hammer actuating member when the hammer actuating member performs a hammering operation on the workpiece and an elastic element elastically deformed when the weight moves rearward in the tool body to push the elastic element such that the elastic element absorbs the reaction force transmitted to the weight. The weight is defined one or both of the cylinder and the tool holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.