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Class Information
Number: 413/67
Name: Sheet metal container making > Apparatus to form container closure (lid) > Having means forming frangible zone on closure
Description: Apparatus including means that weakens a linear portion of the lid so that this line will subsequently fail under pressure and an area within the weakened line can be bent or removed placing a hole in said lid.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7472575 |
Non-circular can end with corner-mounted tab and tooling and a conversion press for providing same |
Jan. 6, 2009 |
| 7270246 |
Non-circular can end with corner-mounted tab and tooling and a conversion press for providing same |
Sep. 18, 2007 |
| 6817276 |
Apparatus for forming bridges in tamper-indicating closures |
Nov. 16, 2004 |
| 6685417 |
Safety container end having improved opening characteristics |
Feb. 3, 2004 |
| 6616393 |
Link coupling apparatus and method for container bottom reformer |
Sep. 9, 2003 |
| 6575684 |
Die for stay--on--tab |
Jun. 10, 2003 |
| 6524048 |
Apparatus for manufacturing can lid |
Feb. 25, 2003 |
| 6004089 |
Method for making easy-open lids with improved scoring |
Dec. 21, 1999 |
| 5938390 |
Antifracture scores for easy open container walls |
Aug. 17, 1999 |
| 5879120 |
Method of seaming a circular cover panel onto the body of a can |
Mar. 9, 1999 |
| 5832770 |
Process for further treating a closure end made of sheet |
Nov. 10, 1998 |
| 5813811 |
Easy-access sheet metal container structures |
Sep. 29, 1998 |
| 5688094 |
Apparatus for joining sheet metal convenience-feature end closure to non-cylindrical sidewall of sheet metal can body |
Nov. 18, 1997 |
| 5564319 |
Apparatus for forming bridges in tamper indicating closures |
Oct. 15, 1996 |
| 5482175 |
Pressurized container top |
Jan. 9, 1996 |
| 5462396 |
Convenience-feature sheet metal end closure and tooling apparatus |
Oct. 31, 1995 |
| 5252019 |
Convenience-feature non-circular end closure with interrupted panel profiling |
Oct. 12, 1993 |
| 5219257 |
Self-opening can lid with improved contour of score and means for making |
Jun. 15, 1993 |
| 5102278 |
Press with external tooling arrangement |
Apr. 7, 1992 |
| 4728766 |
Welding machine for welding tongues onto sheet-metal parts |
Mar. 1, 1988 |
| 4624125 |
Method and apparatus for controlling the spacing between a metal forming punch and a complemental die |
Nov. 25, 1986 |
| 4579495 |
Environmental retained tab ends |
Apr. 1, 1986 |
| 4530631 |
Pull tab for easy open can end-method of manufacture thereof |
Jul. 23, 1985 |
| 4504181 |
Method of forming scored metal sheet |
Mar. 12, 1985 |
| 4455114 |
Method for making a metallic-convenience closure |
Jun. 19, 1984 |
| 4416576 |
Method of forming score in can end plate and method of attaching tab to the same for facilitating the opening of can |
Nov. 22, 1983 |
| 4377084 |
Press apparatus having resilient stop blocks |
Mar. 22, 1983 |
| 4354784 |
Method and apparatus for forming a non-silver scored metal end |
Oct. 19, 1982 |
| 4185576 |
Apparatus for forming tamper-proof closures |
Jan. 29, 1980 |
| 4031836 |
Machine for making can ends having rupturable closures |
Jun. 28, 1977 |
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