Dead bolt of a door lock

Details Dead bolt of a door lock Dead bolt of a door lock

1993-07-16

1995-09-05

Cuomo, Peter M.

Locks

Special application

For control and machine elements

70277, 70472, 70276, E05B 4706

Patent

active

054470471

ABSTRACT:
A dead bolt includes an outer lever and an inner lever, a coil disposed in the outer lever, a rod slidably engaged in the coil and having two extensions, a shaft coupled between the two levers, a disc engaged on the shaft and having two grooves for engaging with the extensions of the rod, the extensions of the rod are biased away from the grooves of the disc such that the shaft can not be rotated by the outer lever, and the rod is caused to move toward the disc when the coil is energized such that the extensions of the rod are caused to engage with the grooves of the disc and such that the shaft can be rotated by the outer lever.

REFERENCES:
patent: 3018652 (1962-01-01), Dubonnet
patent: 4073527 (1978-02-01), Schlage
patent: 4736970 (1988-04-01), McGourty et al.
patent: 4956984 (1990-09-01), Chi-Cheng
patent: 5010752 (1991-04-01), Lin
patent: 5040391 (1991-08-01), Lin

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