Card lock and a punchable key card

Details Card lock and a punchable key card Card lock and a punchable key card

1991-11-13

1993-01-26

Luebke, Renee S.

Locks

Operating mechanism

Key

70352, 70276, 70387, 70405, E05B 2100

Patent

active

051814072

ABSTRACT:
A card lock and a punchable key card having a key card having through holes in the coordinating locatins to and the same number as long pin tumblers provided in a card lock for unlocking the lock without electric power, and a card lock having a plurality of pin tumblers--some long and some short mixed regularly or irregularly--and a dead bolt mover having through holes for the pin tumblers to fit and move is disclosed. The key card functions to push up the short pin tumblers to make the upper ends of all the pin tumblers become positioned in the same level as the upper surface of the dead bolt mover so that the dead bolt mover can be pushed further inward from the locked position to the unlocked position by the key card to retract the dead bolt to unlock the card lock.

REFERENCES:
patent: 451616 (1891-05-01), Egelston
patent: 2692495 (1954-10-01), Verdan
patent: 3595042 (1971-07-01), Sedley
patent: 3665740 (1972-05-01), Taniyama
patent: 3705277 (1972-12-01), Sedley
patent: 3995460 (1976-12-01), Sedley
patent: 4126025 (1978-11-01), Miyamae
patent: 4149394 (1979-04-01), Sornes
patent: 4452059 (1984-06-01), Sornes
patent: 5025647 (1991-06-01), Muus

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