Molded fiber lid for a container
OwnerEric Brown, Donald Bretoninventors
Life of this patent
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Abstract
A container lid formed of cellulose material is provided for mating with a base container to securely hold various items, such as food items. The container lid includes a body having a main portion and a perimeter, and a skirt extending substantially around the perimeter of the body. The skirt includes a shoulder and an intermediate member connected with the shoulder. The intermediate member extends inwardly towards the base container when mating therewith. The intermediate member and skirt cooperatively form a channel or undercut for receiving the base container so that the base container and lid may be interlocked together.
Claims24
A container lid formed of cellulose material and adapted to mate with a base container, comprising:
- a body having a main portion and a perimeter;
- and
- a skirt extending at least substantially around the perimeter of the body, the skirt having,
- a shoulder, and
- an intermediate member connected with the shoulder and extending inwardly towards the base container when mating with the base container;
- wherein the shoulder and intermediate member cooperatively form a channel.
A container lid formed of cellulose material, comprising:
- a body having a main portion and a perimeter;
- and
- a skirt extending at least substantially around the perimeter of the body, the skirt having an inside surface into which an undercut is formed, the undercut defining a lateral dimension extending from a first portion of the undercut to a second portion of the undercut directly opposite and across the skirt from the first portion, the lateral dimension between the undercut first and second portions being greater than a second lateral dimension defined as extending between portions of the skirt immediately above the first and second portions of the undercut and greater than a third lateral dimension defined as extending between portions of the skirt immediately below the first and second portions of the undercut.
In combination, a base container and a lid therefor, the base container including a peripheral portion, and the lid formed of cellulose material and comprising:
- a body having a main portion and a perimeter;
- and
- a skirt extending at least substantially around the perimeter of the body, the skirt having a shoulder and an intermediate member connected with the shoulder to cooperatively form an undercut;
- wherein the skirt is adapted to accept the peripheral portion of the base container in the undercut with the intermediate member providing an interference fit to interlock the lid with the base container.
A container lid formed of cellulose material and adapted to mate with a base container, comprising:
- a body having a main portion and a perimeter;
- and
- a skirt extending at least substantially around the perimeter of the body, the skirt having a shoulder and an intermediate member connected with the shoulder to cooperatively form an undercut adapted to interlock with a rim of a base container to releasably lock the container lid with the base container.
A container lid formed of cellulose material comprising:
- a body having a main portion and an elliptically-shaped perimeter;
- and
- a skirt extending at least substantially around the perimeter of the body, the skirt including a shoulder and an intermediate member connected with the shoulder to cooperatively form an undercut therebetween;
- wherein the intermediate member is disposed at least partially beneath both of the shoulder and the undercut.
A container lid formed by the process, comprising:
- providing a vacuum die base with an article molding region;
- overlying the article molding region of the vacuum die base with a vacuum wire;
- placing a vacuum die ring against at least one of the vacuum die base and the vacuum wire, the vacuum die ring including a channel formed thereon;
- placing a cellulose material lay up to be molded into an article on the vacuum wire and the vacuum die ring;
- and
- overlying the cellulose material lay up with a finishing die to press the cellulose material lay up against the vacuum wire and against the vacuum die ring and into the channel;
- applying heat to the cellulose material lay up with at least one of the finishing die and the vacuum die ring;
- wherein the vacuum die ring facilitates the formation of the cellulose material lay up as a container lid having an undercut.
Dependencies are inferred from the claim text.