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:
Oct. 07, 1997
Filed:
May. 16, 1995
Applicant:
Inventors:
Toshihiko Miyakoshi, Shimosuwa-machi, JP;
Arihiro Yonezawa, Shimosuwa-machi, JP;
Tamotsu Nose, Shimosuwa-machi, JP;
Assignee:
Sankyo Seiki Mfg. Co., Ltd., Nagano, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ; H02K / ;
U.S. Cl.
CPC ...
310 90 ; 277135 ;
Abstract
A bearing device with a primary and secondary magnetic fluid seal for use in a motor. A shaft and a frame in the motor are interconnected by a bearing. A magnetic fluid is placed in a region between the shaft and frame. The primary magnetic fluid seal is positioned above the bearing and the secondary magnetic fluid seal is positioned above the primary magnetic fluid seal to form a two-layered seal.
Miyakoshi, Toshihiko. (1997). Bearing device with a primary and secondary magnetic fluid sealing (U.S. Patent No. 5675199). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5675199
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile