Magnetically acting lock and key
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United States of America Patent
Stats
-
Oct 21, 1980
Issued Date -
N/A
app pub date -
Dec 18, 1978
filing date -
Mar 16, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lock for operation by a magnetic key has locking elements in the form of rollers which can be moved along respective channels in the lock by the magnetic field of the key. Each channel is formed partly in the peripheral surface of a rotatable barrel of the lock and partly in a surrounding sleeve. The barrel can be rotated only when each sleeve is free to move axially relative to the barrel. In the absence of the key, the rollers prevent such axial movement. When the rollers are moved to predetermined releasing positions by the key, they are aligned with respective notches in the sleeves so that axial movement is permitted.
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