Ring binder,申请号US19910734563-传众专利搜索

Ring binder

申请公布号：US5135323(A)

申请号：US19910734563

申请日期：1991.07.23

申请公布日期：1992.08.04

申请人：

U.S. RING BINDER

发明人：PINHEIRO, ANTONIO

分类号：B42F13/26

主分类号：B42F13/26

摘要：A locking ring binder assembly has a resilient sheet metal cover and a pair of operating levers rotatably mounted on the covers. A projection on the operating levers beneath the cover and a leg portion on the operating levers in alignment with the projection through a thickness of the cover locks the binder in a closed position even though the operating levers are not rotated to an over center position.