Combination key

Details Combination key Combination key

1985-09-05

1987-05-05

Wolfe, Robert L.

Locks

Operating mechanism

Key

70395, 70398, E05B 1908, E05B 1918

Patent

active

046622004

ABSTRACT:
A combination key includes a hollow head, a hollow stem connected to the head and a plurality of teeth mounted on racks longitudinally movable in the head and stem. The racks are in meshed engagement with toothed control wheels which are mounted in the head and emerge partially to the outside. The control wheels are located in the head next adjacent the stem. The length of the head is at least equal to the length of the stem so that the racks can be accommodated in the head when the teeth are in a position of maximum retraction.

REFERENCES:
patent: 146468 (1874-01-01), Munger
patent: 639599 (1899-12-01), Mosler
patent: 828480 (1906-08-01), Ibbott
patent: 939679 (1909-11-01), Freud
patent: 4545226 (1985-10-01), Urrestariazu-Borda

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