Door knob spinner lock

Details Door knob spinner lock Door knob spinner lock

1994-05-02

1995-06-13

Cuomo, Peter M.

Closure fasteners

Portable securer plate or bar

292 1, 292DIG2, 70416, 70424, E05B 1714

Patent

active

054235839

ABSTRACT:
An openable rotatable shell which is positioned on and encloses a conventional key lock door knob. The shell freely rotates and prevents exerting a turning force on the knob. Since the keyhole on the knob is covered by such shell, the door cannot be opened until a second lock provided on the shell is opened allowing the shell to be removed from the knob.

REFERENCES:
patent: 4561273 (1985-12-01), Robinson
patent: 4570470 (1986-02-01), Gray, Sr.
patent: 4631938 (1986-12-01), Johnson
patent: 4798069 (1989-01-01), De Forrest, Sr.
patent: 4899564 (1990-02-01), Gilbert

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