Transmission shaft and bit mounting arrangement of a motor-driven hand drill
US5934384A · kind A · utility
56Cited by
7References
3Claims
0Family size
Inventor
Key dates
| Filing date | Apr 27, 1998 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Apr 27, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/17752
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A transmission shaft and bit mounting arrangement includes a transmission shaft, a C-shaped clamping ring fixed to the outside wall of the shaft, a chuck and locating ring fastened together and moved axially on the shaft relative to the C-shaped clamping ring, a compression spring mounted around the shaft and stopped between the C-shaped clamping ring and the locating ring, a bit mounted in a polygonal coupling hole at one end of the shaft, a magnet mounted in the polygonal coupling hole to attract the bit, and a stop member mounted in a hole on the shaft and controlled by the chuck to stop the bit in the polygonal coupling hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.