| 摘要 |
A linear actuator is disclosed which includes a frame, a first lead screw mounted to the frame and adapted for rotation, and a second lead screw mounted to the frame parallel to the first lead screw and adapted for rotation. An actuator block is movably secured to the first and second lead screws and includes an actuator assembly for selectively engaging the first lead screw to move the block in the first direction and an actuator assembly for selectively engaging the second lead screw to move the block in an opposing second direction.
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