Sealing container
AssigneeThe Glad Products Company
InventorsEdward Tucker, George Lueken, Luke Gross, Mark Cruz, Jack F. Melvan
Life of this patent
Estimating the term…
Abstract
The plastic container includes a container top and a container bottom. The container utilizes a cut-back closure device which maintains the container top in a secure position relative to the container bottom and also forms a nearly leak proof seal. The container top includes gripping tabs which facilitate the separation of the container top from the container bottom and permit container venting. The plastic container is suited for microwave cooking, top-shelf dishwashing and freezer use.
Claims74
A plastic container comprising a container bottom and a container top,
- said container bottom includes a first closure portion, said first closure portion includes a first inner cut-back portion and a third outer cut-back portion;
- said container top includes a second closure portion, said second closure portion includes a second inner cut-back portion and a fourth outer cut-back portion;
- each of said first, second, third and fourth cut-back portions being formed as a linear segment;
- and
- said first closure portion engages said second closure portion wherein said first cut-back portion engages said second cut-back portion and said third cut-back portion engages said fourth cut-back portion to secure said container top with said container bottom and to form at least two continuous peripheral seals.
A plastic container top comprising a closure portion which includes an outer fourth cut-back portion sealing wall adapted for interference sealing contact with corresponding closure structure of a container bottom and a gripping tab having a base, wherein said tab provides a recess in said fourth cut-back closure portion sealing wall adjacent to the base of said tab wherein said recess reduces said fourth cut-back portion to facilitate the removal of said container top from a container bottom while still maintaining a continuous outer seal around the outer portion of the perimeter of said closure portion.
A plastic container comprising a container bottom and a container top, said container bottom includes a first closure portion, said container top includes a second closure portion adapted for sealing engagement with said first closure portion of said container bottom, said second closure portion comprising at least an outer fourth cut-back portion sealing wall and a gripping tab wherein said tab provides a recess in said fourth cut-back portion sealing wall adjacent to the base of said tab wherein said recess reduces interference contact between said fourth cut-back portion sealing wall and said first closure portion to facilitate the removal of said container top from said container bottom while still maintaining a seat around the outer portion of the perimeter of said closure portion.
A plastic container comprising a container top and a container bottom, said container bottom includes a first closure portion, said container top includes a second closure portion comprising at least an outer fourth cut-back portion sealing wall and a gripping tab wherein at least a portion of said tab is co-joined to said fourth cut-back closure portion sealing wall thereby defining a recess in said fourth cut-back portion sealing wall effective to facilitate the removal of said container top from a container bottom while still maintaining a seal around the outer portion of the perimeter of said closure portion, wherein the force required to engage said first closure portion with said second closure portion is about 27-31 pounds and the force required to disengage said first closure portion from said second closure portion is about 1.6-1.8 pounds.
A plastic container comprising a container top and a container bottom comprising at least an outer fourth cut-back portion sealing wall and a gripping tab wherein at least a portion of said tab is co-joined to said fourth cut-back closure portion sealing wall thereby defining a recess in said fourth cut-back portion sealing wall effective to facilitate the removal of said container top from a container bottom while still maintaining a seal around the outer portion of the perimeter of said closure portion, said container top and said container bottom engage to form a substantially leak-proof seal when said container is inverted, said container has a weight, said container encloses a volume, wherein said weight to volume ratio is about 33.8-50.7 grams/liter.
A plastic container comprising a container bottom and a container top, said container bottom includes a first closure portion;
- said container top includes a second closure portion;
- said second closure portion being engagable with said first closure portion;
- visual indication means provided to respective engagement surfaces of said first and second closure portions for providing visual indication of closure when said closure portions are engaged.
A plastic container comprising a container bottom and a container top,
- said container bottom includes a first closure portion;
- said container top includes a second closure portion;
- said first closure portion engages said second closure portion to secure said container top with said container bottom and to form three distinct continuous peripheral seals.
Dependencies are inferred from the claim text.