Tight head pail construction
AssigneeUnited States Steel Corporation
InventorHerbert W. Galer
Life of this patent
Estimating the term…
Abstract
Blow molded, tight head plastic containers are provided with interlocking means in the form of a groove on the top section of the container, a tongue on the bottom section of the container and a peripheral rim about the top section of the container. When similar containers are stacked upon one another, this construction permits the stack to remain vertically aligned even when it is tilted to angles of 45.degree. to the vertical.
Claims11
In a tight head, blow molded, cylindrical, plastic container having a top section, a sidewall section and a bottom section, said top section having an eccentric pour opening, and convolutions in its surface to define upstanding members integral with said top section, said upstanding members cooperating with said pour opening to form a pour surface for said container, said bottom section having a central recess adapted to receive upstanding members on the top section of a similar container, the improvement comprising:
- a groove in the outward portions of the upstanding members of said top section,
- a tongue in the interior sidewalls of said recess, and
- an upstanding rim about said top section, wherein said tongue, said groove, and said rim cooperate with each other to provide an interlocking connection between the top and bottom sections of similar containers when stacked one upon another so that said stack remains axially aligned when tilted through an angle of 45.degree. to the vertical.
In a combination of a plurality of tight head, blow molded, cylindrical, plastic containers, each said container being stacked one upon the other, each said container having a top section, a sidewall section, and a bottom section, said top section having an eccentric pour opening, and convolutions in its surface to define upstanding members integral with said top section, said upstanding members cooperating with said pour opening to form a pour surface for said container, said bottom section having a central recess adapted to receive upstanding members on the top section of a lower most adjacent container, the improvement comprising:
- a groove in the outward portions of the upstanding members of said top section,
- a tongue in the interior sidewalls of said recess, and
- an upstanding rim about said top section, said groove, said tongue and said rim cooperating with each other to provide an interlocking connection between the top and bottom sections of adjacent similar containers so that said stack remains axially aligned when tilted through an angle of 45.degree. to the vertical.
Dependencies are inferred from the claim text.