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:
Aug. 14, 2007
Filed:
Mar. 23, 2005
David Cerny, Crawfordsville, IN (US);
Ramesh Kamath, Crawfordsville, IN (US);
Mark Powell, Crawfordsville, IN (US);
Greg Mishler, Crawfordsville, IN (US);
Sohail Sadiq, Crawfordsville, IN (US);
David Oles, Crawfordsville, IN (US);
Lindsey Abney, Crawfordsville, IN (US);
David Cerny, Crawfordsville, IN (US);
Ramesh Kamath, Crawfordsville, IN (US);
Mark Powell, Crawfordsville, IN (US);
Greg Mishler, Crawfordsville, IN (US);
Sohail Sadiq, Crawfordsville, IN (US);
David Oles, Crawfordsville, IN (US);
Lindsey Abney, Crawfordsville, IN (US);
Alcoa Closure Systems International, Crawfordsville, IN (US);
Abstract
An apparatus for molding a plastic closure includes a male mold assembly including a forming pin and an outer pin sleeve which cooperate with a female mold for defining a mold cavity. To facilitate mechanical stripping of a molded closure from the forming pin, pressurized air is introduced into the molded closure through at least one air passageway which extends axially between the forming pin and pin sleeve. By outwardly expanding and forming the plastic closure during ejection from the forming pin, forces to which the closure is subjected during ejection are significantly reduced, thereby desirably reducing the amount of cooling of the closure that is required during the molding cycle prior to ejection. Significantly increased operating speeds for the compression molding apparatus can thus be achieved.