Bottles and jars – Neck – Reinforcing structure
Reexamination Certificate
2002-04-11
2003-11-18
Mai, Tri M. (Department: 3727)
Bottles and jars
Neck
Reinforcing structure
C215S043000, C215S357000
Reexamination Certificate
active
06648157
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to containers and more particularly to threaded containers formed of plastic.
BACKGROUND OF THE INVENTION
The following patents are believed to represent the current state of the art
U.S. Pat. Nos. 6,347,717; 6,044,996; 6,016,932 and 5,005,716.
SUMMARY OF THE INVENTION
The present invention seeks to provide an improved plastic threaded container.
There is thus provided in accordance with a preferred embodiment of the present invention a plastic hot fill container including a container body, which is integrally formed as one piece with a flange, the flange having a generally cylindrical outer facing wall surface onto which are formed a plurality of typically mutually spaced threading protrusions, the flange being characterized in that it is formed with at least one thickened flange portion located at the region of at least one leading edge of the threading protrusions.
Preferably, the at least one leading edge of the threading protrusions partially overlaps a trailing edge of at least one adjacent threading protrusion.
In accordance with a preferred embodiment of the present invention, the at least one thickened flange portion is formed on an inner facing wall of the flange.
Preferably, the plastic hot fill container is formed by blow molding polyester. Preferably, the flange is formed by injection molding polyester.
In accordance with a preferred embodiment of the present invention an inner facing wall surface is straight at the at least one thickened flange portion. Alternatively, the inner facing wall surface is slightly convex at the at least one thickened flange portion.
REFERENCES:
patent: 491198 (1893-02-01), Straus
patent: 3405831 (1968-10-01), Hudson
patent: 4298129 (1981-11-01), Stull
patent: 4649068 (1987-03-01), Collette
patent: 5005716 (1991-04-01), Eberle
patent: 5103991 (1992-04-01), Collins
patent: 5307946 (1994-05-01), Molinaro
patent: 5366774 (1994-11-01), Pinto et al.
patent: 6016932 (2000-01-01), Gaydosh et al.
patent: 6044996 (2000-04-01), Carew et al.
patent: 6142326 (2000-11-01), Cornell et al.
patent: 6227391 (2001-05-01), King
patent: 6347717 (2002-02-01), Eberle
Barkai Yair
Shai Amit
Ladas & Parry
Log-Plastic Products Company (1993) Ltd.
Mai Tri M.
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