Magnetic key-operated locks
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United States of America Patent
Stats
-
Jan 11, 2005
Grant Date -
Nov 25, 2004
app pub date -
May 23, 2003
filing date -
May 23, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A magnetic card-operated lock has a rotatable exposed cover with a peripheral slot into which a magnetic coded operating card can by inserted for unlocking or locking the lock. The cover and principal locking components are mounted to rotate freely about a central axis between a null position and an unlocking position. A positionable weight is mounted to rotate with the cover plate and is radially separated from the axis so as to bias the cover towards various null positions under the action of gravity. There is also a card lock-in mechanism comprising a card lock-in pin that retains a card in the slot while the lock is unlocked, and a card for said lock with hole and dimple projections to retain it when inserted into the slot.
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