Jenny Zeroni,Cory David Sills,Victoria Schuman,Marc D. Knutson,Bryan Matthew Ladd,Benjamin Robert Fruland,Lucas Schneider,Alexander J. Rice
申请号：
US14642811
公开号：
US09770259B2
申请日:
2015.03.10
申请国别(地区):
US
年份:
2017
代理人:
摘要：
Drive shafts having helical blades and methods of making are disclosed. In one method a helical auger blade is formed by twisting or sculpting a heated polymer tube which has been placed over a cylindrical drive shaft. In another method a drive shaft is placed within a helical winding and heat is applied to melt polymer which has been coated over one or both of the drive shaft and helical winding.
