Cylinder lock mechanism

Details Cylinder lock mechanism Cylinder lock mechanism

1977-01-21

1978-04-11

Wolfe, Robert L.

Locks

Operating mechanism

Key

70364A, 70421, E05B 2700

Patent

active

040832104

ABSTRACT:
A lock which includes a barrel member for mounting to a lockable article, such as a door, and which carries a rotatable plug. The plug includes spring biased tumblers. A key is inserted into the plug and engages the tumblers to release the plug for rotation relative to the barrel member, with one of the tumblers interlocking with the key to prevent its removal from the plug when the plug is rotated to an unlocked position.

REFERENCES:
patent: 1835725 (1931-12-01), Thompson
patent: 1906701 (1933-05-01), Maxwell
patent: 2022070 (1935-11-01), Williams
patent: 3418833 (1968-12-01), Kerr

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