发明名称 RING BINDER MECHANISM HAVING RETAINING SYSTEM ON RING MEMBERS
摘要 A ring binder has an elongate body and rings. Each ring includes ring members moveable between open and closed positions. The body and rings are made of one or more moldable polymeric materials. The binder suitably includes a retaining system operable to hold the ring members in the closed position. The retaining system has interlocking formations adjacent ends of the ring members that are moveable between a retaining position in which the retaining system holds the first and second ring members in the closed position and a non-retaining position. The ring members and body can suitably be formed together as one piece from a moldable polymeric material.
申请公布号 US2011311301(A1) 申请公布日期 2011.12.22
申请号 US201113218091 申请日期 2011.08.25
申请人 TO CHUN YUEN;WORLD WIDE STATIONERY MANUFACTURING CO., LTD. 发明人 TO CHUN YUEN
分类号 B42F13/26 主分类号 B42F13/26
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