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:
Sep. 11, 1984
Filed:
Sep. 29, 1982
Applicant:
Inventor:
Terry C Potter, Sylvania, OH (US);
Assignee:
Owens-Illinois, Inc., Toledo, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; B29F / ; B29F / ;
U.S. Cl.
CPC ...
264 39 ; 264 451 ; 264 464 ; 264 469 ; 264250 ; 264255 ; 2643288 ; 264D / ; 425548 ; 425563 ; 425573 ; 425D / ;
Abstract
Hot runner injection molding apparatus for coinjecting two thermoplastic materials sequentially through separate channels to form at least a two-layer sandwich material is provided. There is a valve means for instantaneously switching the flow of thermoplastic material from one channel to the other channel, the valve means preferably comprising a shuttle ball member.