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US08149557B2 Residual magnetic devices and methods 有权
残磁装置及方法

Residual magnetic devices and methods
Abstract:
Residual magnetic locks, brakes, rotation inhibitors, clutches, actuators, and latches. The residual magnetic devices can include a core housing and an armature. The residual magnetic devices can include a coil that receives a magnetization current to create an irreversible residual magnetic force between the core housing and the armature.
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