Colin BOUCHER,Ngac Ba DAO,Megan TRICKEY,Shawn D. BLUHM
申请号：
US15776833
公开号：
US20180339139A1
申请日:
2015.11.18
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A torque coil 10 includes an inner wire layer 14 helically wound in a constricted state. An outer wire layer 18 is helically wound over the inner wire layer in a constricted state. An outer polymer cover 20 surrounds the inner and outer layers thereby securing the inner and outer layers within the outer polymer cover.
