The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2001
Filed:
Apr. 08, 1999
Theodore M. Czesak, Perrysburg, OH (US);
Thomas J. Krall, Toledo, OH (US);
William P. Atkins, Merriam, KS (US);
Owens-Brockway Plastic Products Inc., Toledo, OH (US);
Abstract
Extrusion blow molding apparatus (,) having a blow mold (,), a neck mold (,) positioned above the blow mold and an anvil (,) positioned in an outwardly facing cavity (,) of the neck mold. A container (C) is produced in the molding apparatus from a parison of a heated thermoplastic material by introducing pressurized blowing fluid into the container being formed by way of a blow pin assembly (,) that is reciprocable relative to the blow mold. The blow pin assembly has an inner tubular member (,) with a free end that is within the container during blowing, and an outer tubular member (,) that surrounds the inner tubular member and defines an annulus therewith for withdrawing spent blowing fluid from the container. The outer tubular member has radial ports (,) for directing spent blowing fluid against a moil (M) being formed at a rim (R) of a finish (F) of the container. A restricted outlet from the finish of the container is obtained by providing the anvil with an inwardly and downwardly directed nose portion (,) to form a restricted annular portion (P) in the finish at a location below the rim.