Locking apparatus for sliding door

Details Locking apparatus for sliding door Locking apparatus for sliding door

1987-05-18

1988-12-13

Smith, Gary L.

Locks

Special application

For closures

70 97, 70 99, 70100, 70135, 292DIG46, E05B 6508

Patent

active

047901578

ABSTRACT:
A locking apparatus for sliding doors which comprises a first leaf and a second leaf slidable in a groove, and including a hooking assembly mounted at the side frame of the first leaf and a hook-retaining block mounted at the corresponding side frame of the second leaf. The hooking assembly comprises a vertically slidable locking block which can be elevated by applying a key into a lock outdoors or by manual lift indoors such that the sliding door will be locked. An overriding safety lock pivotal on the hooking assembly keeps the slidable locking block at its uppermost (locked) position if the overriding safety lock has been pushed.

REFERENCES:
patent: 2701156 (1955-02-01), Palmer, Jr.
patent: 2793898 (1957-05-01), Roethel
patent: 3120748 (1964-02-01), Rechberg
patent: 3216229 (1965-11-01), Moncada
patent: 3222897 (1965-12-01), Du Shane, Jr.
patent: 3300238 (1967-01-01), Fleskes
patent: 3353855 (1967-11-01), Smith
patent: 3390557 (1968-07-01), Erickson et al.
patent: 4024739 (1977-05-01), Kaufman
patent: 4068874 (1978-01-01), Fleming et al.
patent: 4103946 (1978-08-01), Tipler

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