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:
Jun. 14, 2022
Filed:
Jan. 12, 2018
Husky Injection Molding Systems Ltd., Bolton, CA;
Abdeslam Bouti, St. Albans, VT (US);
Hakimuddin Boxwala, Brampton, CA;
Nathan Gabriel Southwick, Swanton, VT (US);
Maciej Brelski, Brampton, CA;
Dietmar Tierno Brand, North York, CA;
Adam Christopher Ulemek, Mississauga, CA;
Dirk Holger Schlums, Mulmur, CA;
HUSKY INJECTION MOLDING SYSTEMS LTD., Bolton, CA;
Abstract
A co-injection hot runner nozzle comprises an inner melt flow channel and an annular outer melt flow channel that surrounds the inner melt flow channel. The inner and outer melt flow channels have a first common source. The nozzle further comprises an annular intermediate melt flow channel disposed between the inner and outer melt flow channels. The annular intermediate melt flow channel is at least partly defined by a plurality of spiral grooves, each spiral groove having a respective inlet and defining a helical flow path. Lands between adjacent spiral grooves increase in clearance in a downstream direction. An annular axial flow path is defined over the lands. A plurality of feeder channels having a second common source is configured to supply melt to the plurality of inlets of the spiral grooves. The relationship of feeder channels to spiral grooves may be one-to-one. The inlets may be longitudinal channels.