发明名称 Ring mechanism having blunt ends
摘要 A ring mechanism for a loose-leaf binder comprises a thin, elongate plate and at least two ring members supported by the elongate plate. The ring members move between an open position for receiving and removing loose-leaf pages and a closed position for capturing the loose-leaf pages on the ring while permitting movement of the pages along the ring. The elongate plate has a longitudinal end including spaced apart first and second end portions located on one transverse side of the elongate plate. The first and second end portions are bent over to present a longitudinally facing surface which is blunt. A method of manufacturing a ring mechanism for a loose-leaf binder is also disclosed.
申请公布号 US2005079005(A1) 申请公布日期 2005.04.14
申请号 US20030681512 申请日期 2003.10.08
申请人 WORLD WIDE STATIONERY MANUFACTURING COMPANY 发明人 CHENG HUNG YU
分类号 B42F13/26;(IPC1-7):B42F3/04;B42F13/20 主分类号 B42F13/26
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