Lock and key

Details Lock and key Lock and key

1987-08-04

1989-02-21

Wolfe, Robert L.

Locks

Operating mechanism

Key

70406, E05B 1900

Patent

active

048054283

ABSTRACT:
A lock and key combination includes profile shapes extending along the lateral faces of the key which extend at an angle relative to the key spine to make acquisition of replacement key copies more difficult.

REFERENCES:
patent: 884165 (1908-04-01), Julig
patent: 1287882 (1918-12-01), Christoph
patent: 1804955 (1931-05-01), Schlumpf
patent: 1958603 (1934-05-01), Bacon
patent: 1977189 (1934-10-01), Larson
patent: 4229957 (1980-10-01), Schneerson

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