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:
Oct. 11, 2011
Filed:
Oct. 01, 2008
Tsuneaki Ohashi, Nagoya, JP;
Masakatsu Inoue, Komaki, JP;
Toshiichi Ikami, Konan, JP;
Keiichiro Watanabe, Kasugai, JP;
Kunihiko Yoshioka, Nagoya, JP;
Kazuhi Matsumoto, Nagoya, JP;
Tsuneaki Ohashi, Nagoya, JP;
Masakatsu Inoue, Komaki, JP;
Toshiichi Ikami, Konan, JP;
Keiichiro Watanabe, Kasugai, JP;
Kunihiko Yoshioka, Nagoya, JP;
Kazuhi Matsumoto, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A mold includes a gate communicating with the entire perimeter of a cavity serving as a space configured to form a molded article. A self-curable molding material with flowability is fed into the perimeter of the cavity through the gate; hence, the mold has a small number of dead ends compared with the case where, for example, the molding material is fed into the cavity through a part of the cavity, preventing the formation of bubbles left in the cavity. The arrangement of a gate and a vent each making an acute angle results in the spontaneous separation of the molded article in the cavity from solidified material portions in the gate and the vent due to shrinkage on curing.