Emergency release for security panels
US4064719A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1976 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | Aug 18, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/0908
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Security panels mounted for opening or removal and having a lock mechanism that may be operated by a key from one side and an emergency release mechanism from the other side. The lock mechanism comprises a pair of slide levers disposed on opposite sides of a set of tumblers, one slide lever being engageable by a key inserted through a key opening on one side of the panel, the other slide lever being accessible from the opposite side of the panel through a slot opening. The emergency release mechanism is supplied as a subassembly which is field installed and comprises a support bracket and a bell crank pivoted from the bracket. One portion of the bell crank extends through the slot opening for engaging the other slide lever and operating the lock mechanism when contacted by a force applied in the direction for opening the panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.