A rack and a pinion respectively have stoppers constituted by a flat surface in both sides of tooth portions thereof. The stopper of the pinion is brought into contact with the stopper of the rack at both oscillating stroke ends of the rack, whereby a backlash is absorbed.

Шкаф и шестерня соответственно имеют затворы образованные плоской поверхностью в обеих сторонах частей зуба thereof. Затвор шестерни коснут друг друга с затвором шкафа на обоих осциллируя концах хода шкафа, whereby backlash поглощен.

 
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