Outer handle of a door lock

Details Outer handle of a door lock Outer handle of a door lock

1993-04-15

1994-12-13

Gall, Lloyd A.

Locks

Special application

For closures

70149, 70223, 70477, 70478, 292DIG27, E05B 5506

Patent

active

053720253

ABSTRACT:
An outer handle of a door lock includes a tube extended inward of the door, a lock disposed in the tube, a stub fixed on one end of a shaft and having a square section and a circular section, a cylinder rotatably received in the tube and coupled to the lock and including two pairs of notches of different depth, a board engaged with either of the sections. The shaft can be rotated by the outer handle when the board is engaged with the square section of the stub and can not be rotated when the board is engaged with the circular section. The stub can be rotated by the shaft when the board is engaged with either of the sections.

REFERENCES:
patent: 1714286 (1929-05-01), Waldo
patent: 3800573 (1974-04-01), Babb, Jr. et al.
patent: 4470278 (1984-09-01), Hale et al.
patent: 4470279 (1984-09-01), Neary et al.
patent: 4966399 (1990-10-01), Lin
patent: 5010752 (1991-04-01), Lin
patent: 5074607 (1991-12-01), Lin

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