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:
Dec. 31, 2024
Filed:
Jul. 17, 2020
Noritake Co., Limited, Nagoya, JP;
Noritake Coated Abrasive Co., Ltd., Nagoya, JP;
Takamasa Ishizawa, Nagoya, JP;
Yusuke Oura, Nagoya, JP;
Masayuki Hattori, Nagoya, JP;
Yasuhiro Kamiya, Nagoya, JP;
Koshi Hashimoto, Miyoshi, JP;
NORITAKE CO., LIMITED, Nagoya, JP;
NORITAKE COATED ABRASIVE CO., LTD., Nagoya, JP;
Abstract
A gear-grinding multilayer grindstone includes: a first thread-shaped grindstone and a second thread-shaped grindstone that are fixed to each other, such that the first and second thread-shaped grindstones have a rotational axis that is common to the first and second thread-shaped grindstones; and a thread-shaped groove that is provided in a first outer circumferential surface of the first thread-shaped grindstone and a second outer circumferential surface of the second thread-shaped grindstone. The thread-shaped groove extends continuously over the first outer circumferential surface and the second outer circumferential surface. The second thread-shaped grindstone is constituted by abrasive cloths that are laminated on each other, and has a higher elasticity than the first thread-shaped grindstone.