| 摘要 |
An adjustable bed having a frame in which a movable board and a stationary board are arranged in a planar relationship and the movable board is movable out of the plane of the stationary board by a motor wherein a switch included in a circuit for controlling the motor is turned off by a detector when a portion of a human body is caught between the frame and the movable board during lowering thereof, thereby preventing injury to the body.
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