Dead bolt locking device

Details Dead bolt locking device Dead bolt locking device

1990-03-21

1991-10-01

Gall, Lloyd A.

Locks

Special application

For control and machine elements

70416, E05B 1308

Patent

active

050522027

ABSTRACT:
A locking device for the knob of a reciprocating dead bolt latch for a door having a head portion and downwardly extending spaced apart leg members. The head portion has an aperture adapted to engage the dead bolt latch knob in locking fashion. The leg members define a slot which engages the door knob shank or the door handle.

REFERENCES:
patent: 591177 (1897-10-01), Palmer
patent: 1082427 (1913-12-01), Klespies
patent: 2463195 (1949-03-01), Mungan
patent: 3263462 (1966-08-01), Suroff et al.
patent: 3423974 (1969-01-01), Bernsley
patent: 3585827 (1971-06-01), Dominguez
patent: 3724246 (1973-04-01), Katsaros
patent: 3927544 (1975-12-01), Klein
patent: 3933014 (1976-01-01), Moses
patent: 4064721 (1977-12-01), Morgan
patent: 4279137 (1981-07-01), Cook
patent: 4715200 (1987-12-01), Katsaros

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