Key retaining device

Details Key retaining device Key retaining device

1982-02-04

1984-05-15

Wolfe, Robert L.

Locks

Operating mechanism

Key

70 19, E05B 1100, E05B 7300

Patent

active

044480512

ABSTRACT:
A key retaining device for capturing and selectively locking therein a portion of the working section of a key. When the key is locked in the device, its handle section is visible so that the presence of the key can be instantly determined without unlocking of the apparatus, yet the key cannot be removed from the device until unlocked with a master key. Retention of the key within the housing is accomplished by a resilient clamping mechanism employing a set of wedges which are resiliently urged toward the working section of the key and held there by a rachet spring. Insertion of a master key releases the ratchet spring allowing the wedges to release the key.

REFERENCES:
patent: 1934319 (1933-11-01), Newbauer
patent: 3636742 (1972-01-01), Raney
patent: 3695067 (1972-10-01), Bays
patent: 3708032 (1973-01-01), Suzuki
patent: 3712091 (1973-01-01), Parent
patent: 3742741 (1973-07-01), Cahan
patent: 3744281 (1973-07-01), Logue
patent: 4090380 (1978-05-01), Bianco
patent: 4315420 (1982-02-01), Oliver
patent: 4367827 (1983-01-01), Keller

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