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. 08, 2001
Filed:
Dec. 22, 1998
Applicant:
Inventors:
Trefor T. Jones, Bloomfield Hills, MI (US);
Jacek Kalemba, Mississauga, CA;
Robert D Schad, Toronto, CA;
Stefan Von Buren, Colchester, VT (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 4/523 ;
U.S. Cl.
CPC ...
B29C 4/523 ;
Abstract
Improved method and apparatus for injection molding particularly useful with multiple hot runner valve gates to fill a single large mold cavity. A hot runner injection nozzle is provided having a gate through which melt is injected into a mold cavity, and a valve stem is movable on the injection nozzle between an open position permitting flow of melt through the gate and a closed position blocking the flow of melt through the gate. The valve stem is movable to at least one position between the open and closed positions restricting the flow of melt through the valve gate.