Portable electromagnetic drilling machine
US4541759A · kind A · utility
14Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1983 |
| Grant date | Sep 17, 1985 |
| Priority date | — |
| Expiry date | Nov 30, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/98
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention concerns a portable electromagnetic pneumatic power drill. It may be used to make rivet or bolt holes in structural steel girders in guilding and bridge construction. The base of the drill stand is secured to the steel workpiece by electromagnetism. Exhaust air from the drill head cools the electromagnetic base as well as the bit and workpiece. Drill chips are diverted by the exhaust stream and deflected from the rack slide mechanism by a shield. This allows the slide to approach the base and workpiece very closely to improve steadiness and accuracy of drilling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.