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. 10, 2021
Filed:
Dec. 15, 2015
Gentex Optics, Inc., Dudley, MA (US);
Melvin Gorham, Bolton, MA (US);
Gentex Optics, Inc., Dudley, MA (US);
Abstract
The disclosed embodiments include a system, apparatus and method for forming an ophthalmic lens having reduced risk of optical defects. An illustrative injection molding system includes a heated sprue and a hot runner fluidly coupled to the heated sprue. The system also includes a mold fluidly coupled to the heated runner to receive a molten material. The mold includes a material conduit, which may be included in an interchangeable gate insert, and a lens cavity. The hot runner forms a material conduit having an inlet for receiving material from the hot runner and an outlet for delivering material to the lens cavity. The material conduit also includes a branch cavity disposed between the inlet and the outlet for receiving a diverted volume of degraded lens material.