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. 12, 1999
Filed:
May. 06, 1998
Applicant:
Inventors:
Makoto Kobayashi, Fujisawa, JP;
Masakazu Yamamoto, Fujisawa, JP;
Yoshio Miyake, Fujisawa, JP;
Koji Isemoto, Fujisawa, JP;
Keita Uwai, Fujisawa, JP;
Yoshiaki Miyazaki, Fujisawa, JP;
Assignee:
Ebara Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
41742312 ; 41742313 ; 415229 ; 384297 ; 3849071 ;
Abstract
A bearing device for use in a pump which has a bearing member composed of a hard and brittle material made of ceramic such as silicon carbide (SiC). The bearing device has a bearing housing, a ceramic bearing member housed in the bearing housing and supporting a shaft, an elastic material around the ceramic bearing member for preventing the ceramic bearing member from being broken, and a thrust collar for preventing fragments of the ceramic bearing member from being scattered when the ceramic bearing member is broken.