发明名称 Phillips screwdriver with retractable slotted screw driver blade
摘要 A tubular shank is provided having front and rear ends and including handle defining structure at its rear end and a Phillips head screw engaging tip on its front end. The tip is of the type including four equally peripherally spaced, forwardly tapering and generally radially extending Phillips screw head socket arm portion engaging lugs and includes a central passage extending therethrough opening lengthwise rearwardly into the interior of the tubular shank and forwardly through the forward end of the tip. The passage is generally rectangular in cross-sectional shape with its major transverse center line substantially bisecting the included angles formed between remote pairs of adjacent lugs of the tip. An elongated slotted screwdriver blade is guidingly lengthwise reciprocal through the passage and forwardly extendable past the forward end of the tip and retractable rearwardly from at least the forward portion of the tip.
申请公布号 US4328721(A) 申请公布日期 1982.05.11
申请号 US19800185673 申请日期 1980.09.10
申请人 MASSARI, FRANK 发明人 MASSARI, FRANK
分类号 B25B15/00;B25B15/02;B25G1/08;(IPC1-7):B25G1/00 主分类号 B25B15/00
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