Key switch with at least one switching position

Details Key switch with at least one switching position Key switch with at least one switching position

2007-10-02

2007-10-02

Glessner, Brian E. (Department: 3676)

Locks

Operating mechanism

Key

C070S360000, C070S380000, C070S422000

Reexamination Certificate

active

11403319

ABSTRACT:
The invention relates to a key switch with at least one turn-key switching position comprising a cylindrical lock adapted to perform a translation upon key authorization. The aim is to present a key switch being capable of allowing key hierarchies as well as the withdrawal of the key in particular switching positions. For this purpose the key switch also comprises a lock holder adapted to host the translation of a cylindrical lock in respect to the lock holder along a common rotational axis and the cylindrical lock being form-locking with the lock holder for rotations around the rotational axis. The user is able to employ the turning key movement for the selection of a switching position and an outward and inward linear translation of the key to lock or unlock a switching position.

REFERENCES:
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patent: 3123995 (1964-03-01), Russell et al.
patent: 3541820 (1970-11-01), Best
patent: 3659444 (1972-05-01), Wellekens
patent: 4558193 (1985-12-01), Test
patent: 4634822 (1987-01-01), Goeke
patent: 4639562 (1987-01-01), Fredrickson
patent: 4759204 (1988-07-01), Neyret
patent: 5265453 (1993-11-01), Konii et al.
patent: 5732580 (1998-03-01), Garnault et al.
patent: 6446475 (2002-09-01), Agnatovech et al.
patent: 6711924 (2004-03-01), Ritz
patent: 0 483 048 (1992-04-01), None

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