Cylinder lock and key combination with a guiding profile ridge i

Details Cylinder lock and key combination with a guiding profile ridge i Cylinder lock and key combination with a guiding profile ridge i

1997-10-16

2000-10-24

Gall, Lloyd A.

Locks

Operating mechanism

Key

70406, 70409, 70419, 70420, 70453, E05B 2710

Patent

active

061349291

ABSTRACT:
A cylinder lock and key combination, wherein the lock comprises a side profile ridge (60) disposed in the key slot (53) and having a relatively shallow recess (61), in which a projection (55) on a side tumbler (54) is vertically movable, and a continuously extending edge portion (62). The key has a relatively shallow coded groove (17), which cooperates with the side tumbler projections (55) of the lock, and a rectilinear, deeper profile groove (16), into which the edge portion (62) of the side profile ridge fits. This unitary edge portion secures a good guidance of the key when the latter is inserted into the lock.

REFERENCES:
patent: D325160 (1992-04-01), Best et al.
patent: D325334 (1992-04-01), Best et al.
patent: D325337 (1992-04-01), Best et al.
patent: D325512 (1992-04-01), Best et al.
patent: 5715719 (1998-02-01), Widen
patent: 5809816 (1998-09-01), Widen
patent: 5845525 (1998-12-01), Widen

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