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:
Jul. 26, 1994
Filed:
Oct. 02, 1990
Applicant:
Inventor:
Masachi Hosoya, Fujisawa, JP;
Assignee:
Nippon Seiko Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29B / ;
U.S. Cl.
CPC ...
156242 ; 1563066 ; 1563082 ; 1563096 ; 277 80 ; 29609 ;
Abstract
A seal ring for magnetic fluid seal device, comprising an annular magnet covered with heat activated resin and an annular pole piece stacked and pressed and bonded coaxially with said annular magnet at a temperature higher than heat activated temperature.