Impact tool with improved operability
US6725945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Nov 14, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25F5/021
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An impact driver (1) includes a main housing (2) encasing a motor (5); an internal gear case (8) which is secured by screws to the main housing (2) and is provided with an externally threaded portion (12); and a hammer case (13) with an internally threaded portion (14) which is adapted for threadable engagement with the externally threaded portion (12) of the internal gear case (8) so as to couple the hammer case (13) to the internal gear case (8). The impact driver (1) additionally includes a rotation stop mechanism comprised of a rack (24) disposed within a forward extending portion (23) of the main housing (2) for meshing with dimples (27) formed in the outer surface of the hammer case (13). By fixing the rack (24) with a feed screw (26) disposed transversely in the forward extending portion (23), the hammer case (13) is prevented from rotation with respect to the internal gear case (8) after assembly of the impact driver (1). The impact driver (1) further includes an LED light unit (28) disposed in the extending portion (23) forward of the rotation stop mechanism so as to illuminate objects in front of the hammer case (13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.