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:
May. 04, 2010
Filed:
Jun. 28, 2005
Applicants:
Kanji Sekihara, Toyokawa, JP;
Atsushi Naito, Aichi-ken, JP;
Yoshihiro Okumura, Toyohashi, JP;
Inventors:
Assignee:
Konica Minolta Opto, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 45/73 (2006.01);
U.S. Cl.
CPC ...
Abstract
An injection mold and an injection molding apparatus having a movable mold and a fixed mold. Each of the movable/fixed molds has bases, and a runner, a gate and a cavity are formed. The gate is composed of recesses made in mutually opposite end surfaces of sleeve-like heat insulators provided for the bases. Thereby, the gate is heat-insulated, and resin in the gate is prevented from cooling down during a pressure retention step. Thus, the resin keeps fluidity longer.