Symmetrical side bar lock and key therefor

Details Symmetrical side bar lock and key therefor Symmetrical side bar lock and key therefor

1986-03-21

1988-02-09

Wolfe, Robert L.

Locks

Operating mechanism

Key

70366, 70362, 70392, 70409, 70419, 70378, E05B 2700

Patent

active

047234270

ABSTRACT:
A cylinder lock of the type having twisting tumblers operated by a bitted key having at least one skew-cut bit provided with a side bar which is symmetrical with regard to a radius through a center of the key plug perpendicular to the plane of the key so that the side bar intersects not only slots in the twisting tumblers, but the profile of the key. The key has slots in its side face which extend perpendicular to its longitudinal axis.

REFERENCES:
patent: Re30198 (1980-01-01), Oliver et al.
patent: 464579 (1891-12-01), Mouat
patent: 2022070 (1935-11-01), Williams et al.
patent: 2023847 (1935-12-01), Liss
patent: 2087554 (1937-07-01), Schoorel
patent: 2890582 (1959-06-01), Navarro
patent: 3287945 (1966-11-01), Yulkowski
patent: 3499302 (1970-03-01), Spain et al.
patent: 3499303 (1970-03-01), Spain
patent: 3987654 (1976-10-01), Iaccino et al.
patent: 4098103 (1978-07-01), Raskevicius
patent: 4196604 (1980-04-01), Vorob
patent: 4620429 (1986-11-01), Quillen

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