Dongguk University Industry-Academic Cooperation Foundation
发明人:
Sung Min KIM,Hong Seok LIM
申请号：
US14553546
公开号：
US20150359509A1
申请日:
2014.11.25
申请国别(地区):
US
年份:
2015
代理人:
摘要：
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.
