Lifting magnet
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United States of America Patent
Stats
-
Jul 8, 2008
Grant Date -
Feb 15, 2007
app pub date -
Oct 22, 2004
filing date -
Oct 24, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A lifting magnet having a housing, a rotary magnet unit, and a stationary magnet unit. The lifting magnet also includes a pinion, a socket moving up and down, a slider rotating the pinion to set the magnetization and demagnetization states at top and bottom dead points, respectively, a locking part provided in one of the socket and the slider, a locking unit provided in the other, including a locker, and moving both the socket and the slider up and down while the locker is locked to the locking part, and a locking unit driver alternately driving the locking unit to make the locker released from and locked to the locking part at first and second moving operations, respectively. With this configuration, the lifting magnet can stably keep on and off states of an attractive magnetic force and conveniently performs lifting and carrying operations.
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