发明名称 Perforating strip for printing presses
摘要 An improved perforating strip for use on printing presses formed of an elongated thin metal strip having a base portion of generally rectangular cross-section with flat upper and lower surfaces, the strip having integral upstanding teeth adjacent one edge, the edge of the strip opposite the teeth being curved from the lower surface to the upper surface providing a rounded edge which serves to substantially decrease the impression made in paper against which the strip is pressed, and in one embodiment the strip having an integral anchor portion downwardly extending from the edge opposite the teeth to penetrate the surface of a printing press impression cylinder.
申请公布号 US4962686(A) 申请公布日期 1990.10.16
申请号 US19860866895 申请日期 1986.05.27
申请人 BOYD, HARRY;BOYD, DAVID 发明人 BOYD, HARRY;BOYD, DAVID
分类号 B26D7/26;B26F1/18;B41G7/00 主分类号 B26D7/26
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