Impression-resistant lock

Details Impression-resistant lock Impression-resistant lock

1980-09-30

1983-03-29

Wolfe, Robert L.

Locks

Operating mechanism

Key

70378, 70419, E05B 1514, E05B 2702

Patent

active

043779409

ABSTRACT:
A cylinder lock wherein both cylinder and plug are radially bored to receive pin-pairs of specific design. A pin freeze element is positioned for movement within the plug in a direction substantially orthogonal to the axis of the plug bores. The interface between the pin freeze element and the pins includes incremental notches of matching configuration such that when the plug is turned, the pin freeze element engages the pins locking them from reciprocal movement. The mating surfaces of the pin freeze element and pins must be in registration for the plug to turn at all and they must be in perfect registration and properly aligned for the lock to open.

REFERENCES:
patent: 1965889 (1934-07-01), Fitzgerald
patent: 2059129 (1936-10-01), Maxwell
patent: 2426104 (1947-08-01), Johnstone
patent: 3035433 (1962-05-01), Testa
patent: 3722241 (1973-03-01), Sussina
patent: 3837197 (1974-09-01), Lopez
patent: 4015458 (1977-04-01), Mercurio
patent: 4227387 (1980-10-01), Steinbach

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