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US 4,143,193 AGranted
Molded container
AssigneePhillips Petroleum Company
InventorRobert L. Rees
Life of this patent
Estimating the term…
Abstract
A container is made by attaching an inner member to a rotational mold, extending across the interior of the mold and terminating near the interior surface, and forming a container in the mold by rotational molding.
Claims17
A rotationally molded container comprising:
- a substantially continuous outer wall means of a synthetic resin enclosing a space;
- and
- an inner structure comprising at least one baffle extending across said space, engaging said wall at two locations, carried by support means molded into said wall at one of said two locations and engaging the inner portion of said wall at the other of said two locations;
- said baffle being adapted to permit passage of a fluid within said container from one side of said baffle to the other.
1 more element
A rotationally molded container comprising:
- a substantially continuous outer wall means of a synthetic resin enclosing a space;
- and
- an inner structure comprising a metallic baffle extending across said space, engaging said wall at two opposing locations, carried by support means molded into said wall at one of said two locations and engaging the inner portion of said wall at the other of said two locations;
- said baffle having openings therethrough to permit passage of a fluid within said container from one side of said baffle to the other.
1 more element
A method for making a molded container having a substantially continuous outer wall enclosing a space, comprising the steps of:
- attaching at least one baffle carried by a support means to the inner wall of one side of a rotational mold by removable attachment means extending through said one side of said mold and into said support means;
- said baffle extending across said mold from said one side of said mold to the opposing side of said mold without attachment to said opposing side of said mold and within a distance thereof sufficient to permit free flow of the hereinafter mentioned synthetic resin between said baffle and said opposing side of said mold and to permit build-up of sufficient of said resin to engage said baffle at said opposing side of said mold during the hereinafter mentioned molding;
- closing said mold;
- disposing a quantity of synthetic resin within said mold;
- rotating said mold in a manner to cause said resin to form said outer wall, form about said support means and engage said baffle at said opposing side of said mold by rotational molding;
- removing said attachment means;
- opening said mold;
- and
- removing said container from said mold.
6 more elements
Dependencies are inferred from the claim text.