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:
May. 20, 1997
Filed:
May. 05, 1995
Charles J Brun, Jr, Xenia, OH (US);
Richard J Schock, Miamisburg, OH (US);
Electra Form, Inc., Vandalia, OH (US);
Abstract
An integrated plastic injection mold and blow mold machine includes an injection mold assembly having a cooled exterior mold assembly connected to a plastic injector for injecting plastic. A cooled core assembly is positionable within the cooled exterior mold assembly to define a mold cavity for accepting injected plastic from the plastic injector to form a parison. To allow transfer of the parison to a blow mold assembly, the cooled core assembly is movable with respect to the cooled exterior mold assembly. A thread split holds the parison and is used to first form the neck of a parison, and then move the parison from the injection mold assembly to the blow mold assembly. In addition, the parison is formed by use of a removable cooled core that is movable with respect to the thread split. The removable cooled core accommodates a poppet valve through which air can be introduced to facilitate separation of the parison from the removable cooled core while still leaving the parison held in position by the thread split. The poppet valve is cooled through direct or indirect contact with a cooling medium so that the head of the poppet valve and the plastic adjacent thereto is adequately cooled.