Dead bolt pass key lock

Details Dead bolt pass key lock Dead bolt pass key lock

1993-07-09

1994-12-06

Cuomo, Peter M.

Locks

Operating mechanism

Key

70452, 70461, E05B 1302

Patent

active

053699718

ABSTRACT:
Pass key entry of a space closed by a dead bolt equipped lock door is prohibited by a dead bolt operating knob enclosing housing pivotally mounted to the inside surface of the door adjacent the dead bolt operating knob. The dead bolt knob enclosing housing is moved to door locked position or unlocked position by the occupant of the space.

REFERENCES:
patent: 1700351 (1929-01-01), Lanes
patent: 3423974 (1969-01-01), Bernsley
patent: 3748882 (1973-07-01), Dusault, Jr. et al.
patent: 4044579 (1977-08-01), Le Bel
patent: 5000498 (1991-03-01), Upchurch
patent: 5193373 (1993-03-01), Hunt
patent: 5313812 (1994-05-01), Eklund et al.

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