Safety latch for doors and similar structures

Details Safety latch for doors and similar structures Safety latch for doors and similar structures

1985-08-05

1987-08-04

Moore, Richard E.

Closure fasteners

Extension link

Slotted bar

E05B 1716

Patent

active

046841598

ABSTRACT:
A safety latch construction is disclosed, of the type which has a rigid, pivoted slot-providing member secured to the doorframe, and a runner secured to the door having a T-shaped projection which engages the slot when the safety latch is operative, thereby limiting the amount of door opening movement. All of the parts are formed by stamping processes. No casting or machining is required. The doorframe member includes (a) a supporting member secured to the doorframe and having integral flanges providing pivot apertures, and (b) a pivoted member having an elongated slot formed between metal side bars which have projecting pivot pins and which are spaced at their pivoted ends, the resiliency of the side bars permitting the pivoted member to be readily assembled to the supporting member. An additional locking member provides a deadbolt feature.

REFERENCES:
patent: 189823 (1877-04-01), Whipple
patent: 372326 (1887-11-01), Palmenberg
patent: 540019 (1895-05-01), Gay
patent: 937094 (1909-10-01), Rosenberg
patent: 1596183 (1926-08-01), Horlick, Jr.
patent: 2442733 (1948-06-01), Schultz
patent: 3286381 (1966-11-01), Wooge
patent: 4326739 (1982-04-01), Schlueter

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