发明名称 Ratchet wrench attachment
摘要 A releasable energy storing attachment to be used in conjunction with a ratchet wrench which is to operate a nut of a conventional nut and bolt assembly. The stored energy is to effect either tightening or loosening of the nut, whichever is desired. The attachment is designed primarily for use within confined quarter situations.
申请公布号 US4279314(A) 申请公布日期 1981.07.21
申请号 US19800146798 申请日期 1980.05.05
申请人 TAUB, DARREL 发明人 TAUB, DARREL
分类号 B25B13/48;B25B17/00;B25B23/00;(IPC1-7):E21B3/00 主分类号 B25B13/48
代理机构 代理人
主权项
地址