Torque control for rotary impact tool
作者： Spencer B Maurer
DOI:
关键词:
摘要:
lens.org 参考文章(4)
Lester A Amtsberg, Governor for impact wrenches ,(1940)
Ernest H Shaff, Rotary driving tool ,(1935)
Paul E Schmid, Impact type clutch ,(1949)
Ernest H Shaff, Rotary impact tool ,(1947)