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:
Mar. 01, 1977
Filed:
Jul. 23, 1975
Applicant:
Inventors:
Donald F Armour, Bloomfield, CT (US);
William B Niemi, East Longmeadow, MA (US);
Assignee:
Package Machinery Company, East Longmeadow, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
4252 / ; 425391 ; 425D / ; 425D / ;
Abstract
In an injection blow molding machine, parisons are stretched and twisted as they are moved between the parison mold and the blow mold by extending and rotating the parison pins. The stretching and twisting of the parison prior to the blowing operation permits larger containers with smaller finishes to be produced and also permits the finished article to be stronger by regulating the molecular arrangement in the plastic material forming the article.