Key for a cylinder lock and method for making same
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United States of America Patent
Stats
-
Sep 15, 1981
Issued Date -
N/A
app pub date -
Mar 2, 1978
filing date -
Sep 11, 1975
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Recesses in a key are formed by a cutter having a shape corresponding to the shape of the tumbler pin to be associated with the recess. The recesses to receive perpendicularly extending pins are formed with parallel opposed side walls perpendicular to the key surface to decrease the total space required for recesses of greatest step value. Recess for 45.degree. inclined permutations are formed with one flat wall. Methods and apparatus are disclosed.
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Cited Art Landscape
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