Patent · US Expired

End shape modification to reduce end hook wrinkling

US5005728A · kind A · utility

2Cited by
7References
13Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 14, 1989
Grant dateApr 9, 1991
Priority date—
Expiry dateAug 14, 2009

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB65D7/36
  • WIPO fieldHandling
  • WIPO sectorMechanical engineering

Abstract

This relates to a conventional type metal container end having a modified end hook configuration for the purpose of eliminating undesired wrinkles within a conventional type of double seam between a metal container end and a container body. Most particularly, a customary straight section between an end curl and a cut edge of the metal container end is eliminated so that the end curl terminates at the cut edge. Additionally, the end curl is reinforced so as to stiffen the end curl by providing a reinforcement generally in the area of the normal juncture between a seaming panel and the end curl. In a preferred embodiment the reinforcement is arched primarily upwardly.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.