Screw driver with four fan-shaped blades
US6289775A · kind A · utility
8Cited by
1References
2Claims
0Family size
Inventor
Key dates
| Filing date | Aug 14, 2000 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Aug 14, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B15/005
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A screw driver exclusively applied to drive a particular screw having compound drive recesses that can be driven by various conventional drivers, i.e., slot, cross, square-cross, square, and double-cross. The screw driver enables its drive bit to supply sufficiently large driving torques to the compound drive recesses of the screw and the screw driver lodges securely within the compound drive recesses of the screw as the drive bit of the driver turns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.