Impact driver for electric drill
US4098354A · kind A · utility
13Cited by
9References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1976 |
| Grant date | Jul 4, 1978 |
| Priority date | — |
| Expiry date | Jun 4, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B21/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A rotary impact driver for converting continuous rotation to rotary impact forces, particularly suitable as an attachment for an electric drill. A hammer is supported upon the uniformly rotating input shaft by a plurality of flexible resilient elements capable of twisting about the shaft axis causing axial translation of the hammer when hammer rotation is momentarily restrained due to engagement with an anvil mounted upon an impact producing output shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.