Insert bit for use with a powered screwdriver
US5868047A · kind A · utility
107Cited by
0References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1996 |
| Grant date | Feb 9, 1999 |
| Priority date | — |
| Expiry date | Jul 23, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/142
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention relates to the field of insert bits (10) for use with powered screwdrivers. The formed bits (10) may be treated to have a desired microstructure by either an austempering process or by the three step heating, quenching, tempering process. The bits (10) may also be electro-polished. Austempering provides for improved function and increased fatigue life and electro-polishing provides for improved function and increased fatigue life and torque capacity. The bits (10) and may have reduced diameter midportions (30), particularly for use with impact drivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.