Patio door security lock

Details Patio door security lock Patio door security lock

1980-01-15

1981-10-20

Moore, Richard E.

Closure fasteners

Extension link

292DIG46, E05C 1730

Patent

active

042956765

ABSTRACT:
A locking bar for use with sliding doors such as patio doors or the like, and permitting the sliding door to be securely locked either in a fully-closed position or in an ajar position. The locking bar includes a pair of telescoping members that are adjustably interconnected to have either a greater or a lesser length. One of the telescoping members selectably attaches to a keeper on the sliding door, and is nonremovably retained in the keeper whenever the shorter length is selected so that the door may be ajar, or optionally when the door is locked in the fully-closed position.

REFERENCES:
patent: 1722736 (1929-07-01), Derbyshire
patent: 3328920 (1967-07-01), Cohen et al.
patent: 3420001 (1969-01-01), Raymon
patent: 3471189 (1969-10-01), Ness
patent: 3486781 (1969-12-01), Crum
patent: 3608940 (1971-09-01), Mueller
patent: 3615114 (1971-10-01), Harris
patent: 3816967 (1974-06-01), Littrell
patent: 3820285 (1974-06-01), Shiffler et al.
patent: 3821884 (1974-07-01), Walsh
patent: 4079479 (1978-03-01), Clement

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