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:
Dec. 24, 2019
Filed:
Apr. 28, 2015
Nichias Corporation, Tokyo, JP;
NICHIAS CORPORATION, Tokyo, JP;
Abstract
A spacer () is injection molded by using an injection molding die having resin flow channels that are designed such that a plurality of gates () are arranged along the longitudinal direction at a position corresponding to the outer peripheral surface of a side wall part () in which a plurality of arc-like peripheral surface parts () are connected through a waist part (). After opening the mold and ejecting the spacer, the spacer is cooled with a runner () being connected to the gate (), and thereafter, the runner () is cut off. As a result, when producing a water jacket spacer that is assembled to the inside of the water jacket and controls the flow of cooling water by injection molding, while producing with a high productivity without being affected by design constraints caused by draft angle, deformation in the post-molding cooling step is prevented.