发明名称 DRIVE HEAD FOR A SCISSORS JACK
摘要 A drive head for the screw of a scissors jack which is formed in the shape of a wing nut which has a hexagonal socket formed between opposed walls so that a conventional folding lug wrench can be used by inserting its hex tube into the hexagonal socket to drive it. In the event of overload, the lug wrench will slip relative to the wing nut so as to prevent excessive loads and stresses upon the jack.
申请公布号 CA2052029(C) 申请公布日期 1998.06.23
申请号 CA19912052029 申请日期 1991.09.23
申请人 UNIVERSAL TOOL & STAMPING CO., INC. 发明人 ENGEL, DARRYL L.
分类号 B66F3/12;B66F13/00;(IPC1-7):B66F3/08 主分类号 B66F3/12
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