Locks – Operating mechanism – Key
Patent
1988-07-13
1990-03-13
Wolfe, Robert L.
Locks
Operating mechanism
Key
70383, 70384, E05B 6512
Patent
active
049074318
ABSTRACT:
An adjustable lock has an adjustment slide arranged in the bottom of a key housing, the slide is situated underneath the bolt element and a number of tumbler devices with teeth engage a blade carried by that slide, the improvement of that lock includes a recess and an oblong slot in the bolt element, a first stationay pin mounted to the housing and traversing the oblong slot; a bolt drive lever has its lower end mounted on the pin and is otherwise situated in the recess for translating key motion into a larger latch motion for the bolt, the bolt drive lever having a projection; in addition to a bearing bore, a central part of the bolt driver lever is provided with a key control curve, and the projection on the drive lever engages a U-shaped indent of the bolt, so that the bolt is moved on turning of the drive lever; hence the tumblers are encoded when a key is inserted and turned oppositely following the taking out of the tumblers of said blade, and the key, possibly a new and different key, then re-encodes the tumblers and their alignment.
REFERENCES:
patent: 1136067 (1915-04-01), Watson
patent: 3978700 (1976-09-01), Glass
patent: 4602491 (1986-07-01), Mauer
Mauer GmbH
Siegemund Ralf H.
Wolfe Robert L.
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