Panic-type device having fusible section in push rod to avoid unintentional opening of door in event of fire
US4311329A · kind A · utility
20Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1979 |
| Grant date | Jan 19, 1982 |
| Priority date | — |
| Expiry date | Nov 2, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/0908
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Push rod of panic-type latching device contains a fusible section which melts in the event of a hot fire so that the temperature will not cause elongation of push rod to disengage upper door latch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.