Door lock with lightly-closing force

Details Door lock with lightly-closing force Door lock with lightly-closing force

1990-06-04

1991-03-26

Moore, Richard E.

Closure fasteners

Trippers

Sliding bolt, swinging detent

E05C 116

Patent

active

050023217

ABSTRACT:
A door lock includes a lock body mounted in a door having a main latch operatively extended outwardly to be locked into a locking socket of a door frame and a biasing plate pivotally formed in an outer portion of the lock body and the door of which the biasing plate is normally resiliently biased clockwise as restored by a restoring spring to extend the plate outwardly to allow a protrusion formed on the plate for engaging a recess formed in the main latch for locking the main latch at its retraction state when opening the door, whereby upon a pushing of the door to allow the door frame to first depress the biasing plate inwardly with a lighter force to disengage the protrusion of the biasing plate from the recess of the main latch, the main latch will be extended as urged by its own main restoring spring to completely close the door on the door frame.

REFERENCES:
patent: 203787 (1878-05-01), Smith
patent: 221261 (1879-11-01), Wimmer
patent: 1662449 (1928-03-01), Zubow
patent: 2162929 (1939-06-01), Armstrong
patent: 2322817 (1943-06-01), Borchers
patent: 4576405 (1986-03-01), Wartian

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