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:
Jul. 18, 2000
Filed:
Jul. 24, 1997
Ronald K Raboin, Depere, WI (US);
Western Industries, Inc., Milwaukee, WI (US);
Abstract
A process for blow molding a hollow plastic product comprises introducing a hollow elongated parison of thermoplastic material between a pair of opened sections of a blow mold, and then closing the mold. The mold sections are closed along a linear direction of travel and, when closed, form a mold cavity including a narrow section extending in the direction of travel. The narrow section has a width less than about twice a wall thickness of the parison. As the mold sections close, they sever and enclose a segment of the parison within the mold cavity and shear a double-wall section of the parison into the narrow section to form a reinforcing flange on the product. Upon closing of the mold, a predetermined pressure is provided to an interior of the parison to expand the parison against internal surfaces of the mold cavity to form the remainder of the product. A mold for use in blow molding a hollow plastic product and a one-piece hollow plastic product made by the blow molding process are also disclosed.