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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 11148241 B1

PDFFull Text
Date of Patent:
Oct. 19, 2021

Filed:

Mar. 30, 2017

Main shaft device

Applicant:

Makino Milling Machine Co., Ltd., Tokyo, JP;

Inventors:

Takeshi Kawada, Aiko-gun, JP;

Teppei Nebuka, Aiko-gun, JP;

Assignee:

MAKINO MILLING MACHINE CO., LTD., Tokyo, JP;

Attorney:

Morrison & Foerster LLP

Primary Examiner:

Marcus Charles

Int. Cl.
CPC ...
F16C 19/52 (2006.01); F16C 33/66 (2006.01); F16C 25/04 (2006.01); F16C 35/12 (2006.01); F16C 37/00 (2006.01); B23Q 1/70 (2006.01); B23Q 11/12 (2006.01); F16C 35/04 (2006.01);
U.S. Cl.
CPC ...
B23Q 1/70 (2013.01); F16C 19/525 (2013.01); F16C 33/66 (2013.01); F16C 37/007 (2013.01); B23Q 11/123 (2013.01); B23Q 11/127 (2013.01); F16C 35/042 (2013.01); F16C 35/12 (2013.01); F16C 2202/22 (2013.01); F16C 2233/00 (2013.01); F16C 2322/39 (2013.01);
Abstract

A main shaft device is attached to a work machine. The main shaft device is provided with a main shaft that supports a tool or a workpiece, and a main shaft motor that causes the main shaft to rotate. The main shaft device is provided with bearings that are rolling bearings which support the main shaft in an inner race, and a housing and a rear housing that secure an outer race of the bearings. The housing and the rear housing are formed of a material having a coefficient of thermal expansion greater than that of the main shaft.

Find Patent Forward Citations

Kawada, Takeshi. (2021). Main shaft device (U.S. Patent No. 11148241). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11148241

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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