Locks – Operating mechanism – Key
Patent
1987-11-09
1989-02-14
Wolfe, Robert L.
Locks
Operating mechanism
Key
70382, E05B 3512
Patent
active
048039020
ABSTRACT:
An adjustable and encodible lock for room doors, safe deposit boxes or the like, under utilization of two separate lock structures includes two separate sets of tumblers possibly arranged vertically one above each other; a main slide coupled to an existing lock cylinder or to the common lock or latch or both, the main slide has two follower pins (13b and 13c); the upper tumbler system may be aligned with a cylinder axis of an existing lock; the lower tumbler system is then axially aligned with a latch handle and a lock disk for locking and unlocking the main slide; two control slides (21, 22) are respectively associated with the separate two lock and tumbler sets and are respectively provided with cutouts (21c, 22c) for engagements with the two follower pins; a first one of the tumbler set is provided for being operated by a customer key, the other one of the sets is provided for operation by a management key; each tumbler of the first set has funnel shaped control cutouts; and an intermediate slide is provided with a cam for engagement with the management key and has a control pin for operating and reorganizing the tumbler elements of the first tumbler set as a customer key for new adjustment is inserted in the engagement with the first tumbler set.
REFERENCES:
patent: 1693731 (1928-12-01), Sioberg
patent: 3772904 (1973-11-01), Parrock
patent: 3983728 (1976-10-01), Phillips
Mauer GmbH
Siegemund Ralf H.
Wolfe Robert L.
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