Pull-tab forming method

Sheet metal container making – Method – Forming or treating metallic closure

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

413 14, 413 17, 220276, B21D 5100

Patent

active

045112991

ABSTRACT:
An easy open pull-tab container and related method comprises a generally planar end having a line of weakness defining a tear line so that a portion of the end is partially removable, the tear line lying in the plane of the end. A pull-tab is provided for severing the portion along the tear line, with first and second portions of the end wall on opposite sides of, and spaced from the line of weakness, extending underneath the area adjacent the line of weakness and to form blunt, protective shoulders at the line of weakness. The protective shoulders are formed via first and second concentric grooves in the end, the grooves extending below the level of the end to form inner and outer beads, the inner bead extending substantially below the outer bead. A central bead is formed in the end between the first and second concentric grooves, the central head extending above the level of the end. The inner and outer beads are forced towards each other and toward the plane of the end until the inner and outer beads abut the center bead, but are spaced a distance apart approximately equal to the line of weakness.

REFERENCES:
patent: 804845 (1905-11-01), Hodgson
patent: 2112231 (1938-03-01), Sperctel
patent: 3411470 (1968-11-01), Faage
patent: 3838788 (1974-10-01), Stargell
patent: 3875884 (1975-04-01), Zundel
patent: 3981412 (1976-09-01), Asmes
patent: 4159061 (1979-06-01), Cornelius
patent: 4276843 (1981-07-01), Hansen

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Pull-tab forming method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pull-tab forming method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pull-tab forming method will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1453368

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.