Impact power tool
US7383895B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2006 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Aug 15, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D2250/391
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
It is an object of the invention to provide an improved technique for lessening an impact force caused by rebound of a tool bit after the striking movement of the tool bit. Representative impact power tool (101) includes a tool body (103), a hammer actuating member (119, 145), a driving mechanism (113, 115), a weight (163) and an elastic element (165). A reaction force that the hammer actuating member receives from the workpiece when performing a hammering operation is transmitted from the hammer actuating member to the weight (163) and then, the weight (163) is caused to move rearward to push the elastic element (165). As a result, the reaction force can be absorbed by the elastic element (165). The elastic force of the elastic element (165) is prevented from acting upon the weight (163) forward beyond the reaction force transmitting position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.