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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 10302128 B1

PDFFull Text
Date of Patent:
May. 28, 2019

Filed:

Aug. 03, 2016

Combined ball bearing, main spindle device, and machine tool

Applicant:

Nsk Ltd., Tokyo, JP;

Inventors:

Yoshiaki Katsuno, Fujisawa, JP;

Shoichiro Oguri, Fujisawa, JP;

Assignee:

NSK LTD., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Marcus Charles

Int. Cl.
CPC ...
F16C 19/56 (2006.01); F16C 19/16 (2006.01); F16C 19/54 (2006.01); F16C 35/12 (2006.01); F16C 33/32 (2006.01); F16C 25/08 (2006.01);
U.S. Cl.
CPC ...
F16C 19/56 (2013.01); F16C 19/163 (2013.01); F16C 19/541 (2013.01); F16C 19/546 (2013.01); F16C 25/08 (2013.01); F16C 33/32 (2013.01); F16C 35/12 (2013.01); F16C 2300/22 (2013.01); F16C 2322/39 (2013.01);
Abstract

A matched ball bearing includes four or more rows of angular ball bearings axially aligned, two or more rows of the angular ball bearings with contact angles in a same direction being arranged in a back-to-back combination. The respective angular ball bearings have same inner diameters, respectively. The respective angular ball bearings with contact angles in the same direction have same outer diameters, respectively. The respective angular ball bearings with contact angles in different directions have different outer diameters, respectively. With respect to at least the respective angular ball bearings having the larger outer diameters, the angular ball bearing positioned at an axially outboard side has a ball diameter and a contact angle greater than those of the angular ball bearing positioned at an axially inboard side.

Find Patent Forward Citations

Katsuno, Yoshiaki. (2019). Combined ball bearing, main spindle device, and machine tool (U.S. Patent No. 10302128). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10302128

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

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