Mehran Armand,Michael D. Kutzer,Christopher Y. Brown,Russell H. Taylor,Ehsan Basafa
申请号：
US13825461
公开号：
US20130197306A1
申请日:
2011.09.22
申请国别(地区):
US
年份:
2013
代理人:
摘要：
A device includes first and second sheets of first and second elastic materials, respectively, and a control wire. The first sheet has a first thickness and a first length and is shaped to have a first cross-section having a first inner periphery and a first outer periphery. The second sheet has a second thickness and a second length and is shaped to have a second cross-section having a second inner periphery and a second outer periphery. One of the first sheet and the second sheet has a spacing disposed in along one of the first length and the second length, respectively. The first outer periphery is less than or equal to the second inner periphery. The second sheet surrounds the first sheet. The control wire has an end constrained to one of the first sheet the first material and the second sheet. The control wire is disposed within the spacing.
