发明名称 Newspaper tube closure
摘要 An inner door is pivotally mounted adjacent one of the sides of a newspaper tube in the newspaper tube at a predetermined distance from the open mouth thereof and is rotatable perpendicularly to the top and bottom of the tube. A spring-biased device abuts the inner door and urges it to its closed position perpendicular to the sides of the tube. An outer door is pivotally mounted adjacent the top of the newspaper tube adjacent the open mouth of the tube between the inner door and the open mouth and is rotatable perpendicularly to the sides of the tube. The outer door is restrained in its open position by a lip extending perpendicularly from an edge of the inner door adjacent and parallel to the top of the tube and extending toward the open mouth of the tube. The lip of the inner door abuts the outer surface of the outer door in the area of the top edge of the outer door when the inner door is closed. The outer door is released to pivot to its closed position by the removal of the lip from the outer door when the inner door is in its open position at which time the outer door closes the newspaper tube in a weatherproof condition.
申请公布号 US4181250(A) 申请公布日期 1980.01.01
申请号 US19780963923 申请日期 1978.11.24
申请人 WITHROW, VIRDEAN N 发明人 WITHROW, VIRDEAN N
分类号 A47G29/122;(IPC1-7):A47G29/12 主分类号 A47G29/122
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