Pullback system
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United States of America Patent
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Mar 6, 2018
Issued Date -
N/A
app pub date -
Nov 25, 2014
filing date -
Jun 16, 2014
priority date (Note) -
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Abstract
Disclosed is a pullback system, which has a simplified and miniaturized structure and an advanced function. The pullback system includes a central unit, which includes a rotation transducer part that rotates, and a stretchable part that is connected to a side of the rotation transducer part to rotate together with the rotation transducer part and that has a stretchable property, and a first unit rotatably coupled to a portion of the central unit. As the first unit moves in a first direction oriented from the rotation transducer part to the stretchable part or in a second direction opposite to the first direction, the stretchable part contacts or stretches.
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