Machine tool guards
US4078451A · kind A · utility
3Cited by
1References
10Claims
0Family size
Inventors
Key dates
| Filing date | Dec 3, 1976 |
| Grant date | Mar 14, 1978 |
| Priority date | — |
| Expiry date | Dec 3, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2194
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A machine tool, such as a hydraulic press, has a movable guard to prevent the operator's hands from being present in the vicinity of the powered operating element, such as a press tool, while the machine is operating. The guard can be actuated automatically or manually by the operator and is connected to a dump valve in the hydraulic system so that power cannot be applied to the operating element at any time except when the guard is fully closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.