Door latch mechanism

Details Door latch mechanism Door latch mechanism

1988-04-25

1989-09-12

Smith, Gary L.

Locks

Special application

For closures

70110, 292221, 292226, 292DIG37, E05B 5900

Patent

active

048648353

ABSTRACT:
A door latch and lock mechanism especially for storm doors and screen doors, having a latch and a lock bolt. The latch can be retracted from the outside by a button which pushes a plunger in a lengthwise direction. When the plunger is rotated in one direction it will lock the latch in the latched position and also extend the locking bolt to its locked position. When the plunger is rotated in the opposite direction, the latch is released and the bolt is retracted. The plunger is rotated in one direction or the other from the outside of the door by a key operated mechanism spaced from the push button and operatively connected to the plunger by connecting links.

REFERENCES:
patent: 1383088 (1921-06-01), Earle
patent: 2759351 (1956-08-01), Allen
patent: 2773376 (1956-12-01), Wartian
patent: 2818722 (1958-01-01), Shaw et al.
patent: 2824441 (1958-02-01), Wartian
patent: 3044816 (1962-07-01), Nazurian
patent: 3100388 (1963-08-01), Wartian
patent: 3174608 (1964-09-01), Turner et al.
patent: 3188840 (1965-06-01), Wartian
patent: 3677591 (1972-07-01), Waldo
patent: 3991595 (1976-11-01), Bahry et al.
patent: 4520639 (1985-06-01), Wartian
patent: 4696174 (1987-09-01), Marks

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