Safety device for a locking and opening system
US4494586A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1981 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | Dec 8, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21F7/005
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a safety device for an interlocking mechanism between two sealed enclosures such as found in biological or nuclear environments and which prevents accidental opening of one or the other of two doors closing off the enclosures, which prevents leakage from the enclosures and which may be readily retrofitted to an existing locking system. The locking system comprises a locking ring (36) rotatable between an inoperative position and a locking position for locking the two enclosures and an operating lever for locking the two doors. The safety device includes two locking mechanisms electrically controlled by four prepositioned detection means on the form of microswitches for locking and unlocking the two locking mechanisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.