Strike plate and security chain latch

Details Strike plate and security chain latch Strike plate and security chain latch

1982-08-26

1986-03-25

Moore, Richard E.

Closure fasteners

Extension link

Chain

292340, 29234117, E05C 1736

Patent

active

045778965

ABSTRACT:
An improved lock strike plate and security chain means are rotatably coupled within a recess within the strike plate means as well as within a recess of the door frame to which the strike plate is mounted. Means are provided within the security chain latching means to inhibit the decoupling of a security chain latched thereto when the door is placed ajar. Further means are provided for exterior key actuation of the chain latch to permit decoupling of the latch from a security chain by a person outside the secured area in an emergency situation. Orthogonal coupling means matingly engaged within the interior of the door frame itself strengthen the strike plate/chain latch assembly, reinforcing the door frame and making that frame a more integral part of the door locking assembly than has been heretofore achieved in the prior art.

REFERENCES:
patent: 795882 (1905-08-01), Atkin
patent: 2946213 (1960-07-01), Reiner
patent: 3897966 (1975-08-01), Draughon, Sr.
patent: 4027907 (1977-06-01), Crepinsek
patent: 4174862 (1979-11-01), Shane

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