초록 ▼

An easily openable can lid wherein buckling parts are provided nearby a peripheral groove formed on the can lid in a range of 25 to 65 degrees from the center of the top plate from a line between the tip end of the openable member and the center of the top plate in all sector segments formed when th

An easily openable can lid wherein buckling parts are provided nearby a peripheral groove formed on the can lid in a range of 25 to 65 degrees from the center of the top plate from a line between the tip end of the openable member and the center of the top plate in all sector segments formed when the can lid is divided into four sector segments by a line between an extreme end of the openable member and the center of the top plate and a line which passes through the center of the top plate and orthogonally intersects the above described line. A reinforcing part with a reinforcing effect smaller than a buckling effect is provided at a coupling part between the top plate and the peripheral groove or near said coupling part except for the buckling part at an opposite side of the openable member and its neighborhood to provide a difference of strength between the buckling part at the openable member side and the buckling part at an opposite side of the openable member.

대표청구항 ▼

[ What is claimed is:] [1.] An easily openable can lid comprising:a top plate and a peripheral groove provided proximate a periphery of said top plate,a tab fastened to said top plate at an approximate center of the top plate,a discontinuous score line, that is, a score line having a starting point

[ What is claimed is:] [1.] An easily openable can lid comprising:a top plate and a peripheral groove provided proximate a periphery of said top plate,a tab fastened to said top plate at an approximate center of the top plate,a discontinuous score line, that is, a score line having a starting point and an ending point spaced from the starting point, wherein the starting point and the ending point are located near to said center;a push-open openable member having a tip end surrounded by said score line, the tip end extending towards the periphery of the top plate,four buckling sections respectively provided in four sector segments in said top plate near to said peripheral groove in a range of 25 to 65 degrees, the four sector segments being defined by a first straight line drawn between the tip end of said openable member and passing through the center of said top plate and a second straight line which passes through the center of the top plate and orthogonally intersects the said first straight line at said center, said first and second lines dividing said top plate into said four sector segments, anda reinforcing part provided between the center of the top plate and said peripheral groove,there being one buckling section in each of said four sector segments, wherein, to provide a difference of strength between the two buckling sections nearest the openable member and the two buckling sections at an opposite side of the openable member, each of the two buckling sections in the two sector segments at the opposite side of said openable member buckles before either of the two buckling sections in the two sector segments located nearest said openable member buckle.