发明名称 Apparatus and method for forming a retaining ring on a wheel for a ratchet wrench
摘要 A method of forming a ratchet wheel adapted to be disposed in at least one end of the ratchet wrench for engaging an element to be turned, includes the step of providing a wheel blank having a generally hollow, cylindrical body formed with a radially projecting rib located midway between an upper hub portion and a lower hub portion, the upper hub portion being integrally formed with an upstanding lip having a diameter equal to or slightly smaller than the diameter of the upper hub portion. The method also includes the step of bending the lip inwardly to form a retention ring adapted to engage the upper surface of the element to be turned and prevent the element from slipping through the wheel of the ratchet wrench.
申请公布号 US2002029605(A1) 申请公布日期 2002.03.14
申请号 US20010945412 申请日期 2001.08.31
申请人 A&E MANUFACTURING COMPANY, 发明人 GREUEL BILLY R.;HAASE EDWARD A.
分类号 B21K5/16;B25B23/00;(IPC1-7):B21J7/16 主分类号 B21K5/16
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