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. 21, 2013
Filed:
Oct. 08, 2010
Naoto Miyauchi, Obu, JP;
Masashi Ozeki, Obu, JP;
Yoshiyasu Yasui, Obu, JP;
Akihiro Kamiya, Takahama, JP;
Hiroki Shimada, Anjo, JP;
Naoto Miyauchi, Obu, JP;
Masashi Ozeki, Obu, JP;
Yoshiyasu Yasui, Obu, JP;
Akihiro Kamiya, Takahama, JP;
Hiroki Shimada, Anjo, JP;
Aisan Kogyo Kabushiki Kaisha, Obu, JP;
Denso Corporation, Kariya, JP;
Abstract
A resin gear comprises a rim in an outer peripheral part of a plate, teeth provided on an outer periphery of the rim, a boss provided in a central part of the plate, and a circular rib between the boss and the rim. The resin gear is manufacturable by injection molding that a molten material is injected into a cavity through a plurality of gates arranged at almost equally spaced intervals circumferentially on a forming portion for the circular rib in a direction perpendicular to a side of the plate. The resin gear includes a plurality of inner thin-wall portions on the plate between the circular rib and the boss and a plurality of outer thin-wall portions on the plate between the circular rib and the rim, each of the inner thin-wall portions and the outer thin-wall portions being symmetrically shaped with respect to the radial line passing through each gate corresponding point.