Safety guard for lathes
US5992276A · kind A · utility
Inventor
Key dates
| Filing date | Apr 9, 1998 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Apr 9, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/30392
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A safety apparatus for use in connection with motor driven machine tools such as engine lathes of the character used to dress the brake shoe and brake pad engaging surface of automobile brake drums and rotors. The safety apparatus can be quickly and easily attached to conventional brake drum/disc dressing lathes without the necessity of substantially modifying the lathes, does not interfere with the normal machining processes and yet fully protects the operator from accidentally contacting the rotating work pieces during the dressing operation. The apparatus includes novel safety switch mechanisms which positively prevent energization of a motor of the lathe using the factory installed "on-off" switch of the machine so long as the safety guard is in a raised position. Accordingly, required work piece set-up operations can be accomplished only through use of a specially wired foot switch which permits controlled, intermittent energization of the lathe motor by the operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.