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US 5,469,985 AGranted
Stainless steel container with deformation protecting device
AssigneesFujitechno Ltd., Suntory Limited
InventorsKazuo Furuichi, Tatsuya Gomi
Life of this patent
Estimating the term…
Abstract
The container of the present invention includes a rubber protector. The rubber protector is annularly fitted to at least one of an upper end wall and a lower end wall of the container body and extends over the outer peripheral region of the end wall. The end wall is formed with an annular stepped portion by cold working and a radial protruded portion so that work-hardening of the stainless steel is formed to increase the strength of the end walls.
Claims13
A metal container for storing liquid therein, comprising:
- a cylindrical container body made of a metal plate, and having a cylindrical girth portion and upper and lower end walls at longitudinal ends of the girth portion,
- a hardened region formed on at least one of the upper and lower end walls to harden the same for preventing deformation of the end wall, said hardened region including at least one annular stepped portion provided in a middle of the end wall to form an inner portion and an outer portion relative to the stepped portion, and a plurality of radial ribs formed in the inner portion and extending radially outwardly from a center portion thereof said inner portion being located axially outwardly relative to the outer portion along a longitudinal axis of the cylindrical girth portions, said annular stepped portion having an inclined surface and
- a rubber protector fixed onto the end wall with the hardened region and extending from an end of the girth portion to the inclined surface of the end wall with the hardened region, said rubber protector preventing deformation of the end wall.
Dependencies are inferred from the claim text.