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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.:

US 10576673 B1

PDFFull Text
Expired
Date of Patent:
Mar. 03, 2020

Filed:

Feb. 22, 2017

Resin gear, injection molding method for resin gear, resin-tooth-provided belt pulley, and resin rotator

Applicant:

Enplas Corporation, Saitama, JP;

Inventors:

Kazuyuki Sakamaki, Saitama, JP;

Tetsuya Tokiwa, Saitama, JP;

Assignee:

ENPLAS CORPORATION, Saitama, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Zakaria Elahmadi

Int. Cl.
CPC ...
B29C 45/27 (2006.01); F16H 55/06 (2006.01); B29D 15/00 (2006.01); F16H 55/48 (2006.01); F16H 55/17 (2006.01); B29L 15/00 (2006.01);
U.S. Cl.
CPC ...
B29C 45/2708 (2013.01); B29C 45/27 (2013.01); B29D 15/00 (2013.01); F16H 55/06 (2013.01); F16H 55/17 (2013.01); F16H 55/48 (2013.01); B29C 2045/2709 (2013.01); B29C 2045/2716 (2013.01); B29L 2015/00 (2013.01); B29L 2015/003 (2013.01); F16H 2055/065 (2013.01);
Abstract

A resin gear includes a web with a side surface on which a first annular rib and a second annular rib are formed to be concentric with a boss. The web has an inner web portion coupling the first annular rib to the second annular rib, and an outer web portion coupling the second annular rib to a rim. The inner web portion is formed to have a thickness gradually reduced from one intersection point toward another intersection point, the intersection points being intersection points of a virtual radial direction line passing through a center of the boss with the second annular rib. The first annular rib has a side surface on which only one gate mark of an injection molding is formed at a position on a radially outer side with respect to a first tooth portion and a position biased to the other intersection point on the virtual radial direction line.

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Sakamaki, Kazuyuki. (2020). Resin gear, injection molding method for resin gear, resin-tooth-provided belt pulley, and resin rotator (U.S. Patent No. 10576673). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10576673

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