公开(公告)号：US3875884A

公开(公告)日：1975-04-08

申请号：US32536173

申请日：1973-01-22

Applicant: NAT CAN CORP

Inventor： ZUNDEL ARTHUR P

IPC: B21D51/38 ,  B21D51/44

CPC classification number: B21D51/383 ,  B65D17/4011 ,  B65D17/404

Abstract: The present invention relates to a easy open end of the type that has a tab connection thereto by an integral rivet. The invention resides in an improved method for forming a weakened area or frangible connection between the permanent section of the panel and the removable section. The frangible connection in the panel is formed in such a manner that the removable section is relieved of any compressive forces that may have developed during the formation of the frangible connection. In addition, the removable section of the panel incorporates a further area of reduced cross-section that allows the tab and rivet to be pivoted relative to the removable panel section during initiation of rupture of the frangible connection and provides a vent for the inside of the container prior to the rupture of the frangible connection.

公开(公告)号：US3874555A

公开(公告)日：1975-04-01

申请号：US45552574

申请日：1974-03-28

Applicant: NAT CAN CORP

Inventor： PATARINI LEON M ,  BRONEC JOSEPH A ,  ZUNDEL ARTHUR P

IPC: B65D17/00 ,  B65D17/32 ,  B65D17/34 ,  B65D17/347 ,  B65D17/353 ,  B65D41/32

CPC classification number: B65D17/4012

Abstract: An end panel for a container is disclosed herein. The end panel has a tear strip defined by a weakened area of material, which has a leading end adjacent the periphery of the panel and a base end permanently attached to the main body of the panel. The area of weakened material produces a minimum residual along a portion of the leading end and the residual increases in thickness from the leading end to a maximum thickness at the base end. The configuration of the elongated tear strip is generally U-shaped and has a maximum transverse dimension along the leading edge and progressively reduces in transverse dimension from the leading edge down to an intermediate portion. The tear strip also has an integral rivet formed adjacent the leading end and the rivet has a further surrounding weakened area which has its radius located on the center of the rivet and circumscribes an arc of more than 180* about the periphery of the rivet.

Abstract translation: 本文公开了一种用于容器的端板。 端面板具有由材料的弱化区域限定的撕裂带，其具有邻近面板的周边的前端和固定在面板的主体上的基端。 弱化材料的区域沿着前端的一部分产生最小的残余，并且在基端处从前端到最大厚度的厚度的残余增加。 细长撕带的构型大致为U形，沿着前缘具有最大的横向尺寸，并且横向尺寸从前缘向下逐渐减小到中间部分。 撕裂带还具有与前端相邻形成的整体铆钉，并且铆钉具有另外的周围的弱化区域，其半径位于铆钉的中心，并围绕铆钉的周边环绕超过180度的弧。