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:
Jan. 18, 2005
Filed:
Feb. 23, 2001
Marshall Ray Porter, Oakdale, IL (US);
Marshall Ray Porter, Oakdale, IL (US);
Conix Corporation, Dearborn, MI (US);
Abstract
The present invention provides processes and an apparatus for injection-molding an article with a fluid channel formed therein. The process includes providing at least first and second resin streams within a mold cavity, causing the flow fronts () of the resin streams to meet at a longitudinal point in the mold cavity to form a first layer of solidified resin on a peripheral surface of the mold, the first layer having a knit line () at the longitudinal point where the resin streams meet; and introducing a fluid into the molten resin in the mold to form a fluid channel () and a second layer () of solidified resin, the second layer between the fluid channel and the first layer of solidified resin, wherein the second layer is devoid of a knit line at the longitudinal point in the mold cavity where the first and second flow fronts meet.