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:
Jul. 14, 2020
Filed:
Jan. 26, 2018
Taiwan Green Point Enterprises Co., Ltd., Taichung, TW;
Ray-Long Tsai, Taichung, TW;
Chi-Hung Liao, Taichung, TW;
Yan-Hua Li, Taichung, TW;
Chien-Jung Hsu, Taichung, TW;
Chun-Hao Hu, Taichung, TW;
Chia-Yu Yen, Taichung, TW;
Taiwan Green Point Enterprises Co., Ltd., Taichung, TW;
Abstract
An injection molding method includes the steps of positioning a core piece in a mold cavity through a plurality of positioning pins; injecting a molten plastic material into the mold cavity to surround and cover the core piece; maintaining the pressure inside the mold cavity at a predetermined maintaining time so that the core piece is positioned by the molten plastic material; retracting the positioning pins from the mold cavity when a predetermined retraction time is reached, so that spaces occupied by the positioning pins in the mold cavity can be filled with the molten plastic material; and completely curing the molten plastic material to form a finished product.