Fused, spring latch

Details Fused, spring latch Fused, spring latch

E - Fixed Constructions

05

B

E05B 9/00 (2006.01) E05B 17/20 (2006.01) E05B 65/10 (2006.01) E05C 1/12 (2006.01)

Patent

CA 2163320

A platform having fingers rising therefrom is interengaged with a second, fusible platform. The latter holds the former at an angle in which the fingers avoid notches formed in the tail of the latch bolt. When the fusible platform dissolves in the presence of excessive heat, the fingered platform assumes a normal horizontal disposition, and the fingers obstruct the notches in the tail and prevent the latch bolt from retracting.

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