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. 13, 2000
Filed:
Apr. 13, 1999
Tomohiro Murayama, Yokohama, JP;
Hiroyuki Hata, Mino, JP;
Kazuhiko Mori, Tokyo, JP;
Akira Morimoto, Yokohama, JP;
Kabushiki Kasiha Toshiba, Kawasaki, JP;
Abstract
An injection molding die comprising a lower die and an upper die for manufacturing an objective lens drive unit, comprises a plurality of gates formed on the lower die in position perpendiculars to the direction of opening and closing the lower die and the upper die for allowing resin to flow into the cavity formed of the lower die and the upper die and a plurality of runners each with an end thereof connected to the corresponding gate and the other end thereof formed on the upper die, wherein each of the runners including the end-to-end portion thereof is formed inclined toward the upper die.