Dual key locks having improved precision and versatility

Details Dual key locks having improved precision and versatility Dual key locks having improved precision and versatility

1981-01-15

1982-11-23

Wolfe, Robert L.

Locks

Operating mechanism

Key

70355, 70385, E05B 3512

Patent

active

043598846

ABSTRACT:
The lock configuration described in the parent application enables a dual key lock to operate efficiently, accurately and conveniently with a single stack of tumblers. Also, the individual tumblers of the invention are typically receivable in the lock in a plurality of alternative orientations in which their gates assume different functions, facilitating key changes. The present application discloses means for further improving the precision of gate positioning in such locks, and remarkably simple and economical means for adapting such locks for either right- or left-hand installation.

REFERENCES:
patent: 1148282 (1915-07-01), Benham
patent: 3127759 (1964-04-01), Ellis
patent: 4072032 (1978-02-01), Phillips
patent: 4332153 (1982-06-01), Miles

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