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:
May. 12, 1987
Filed:
Sep. 14, 1984
Seiichi Tsuji, Chiba, JP;
Kazuhiro Ogawara, Kanagawa, JP;
Shikuo Koide, Tokyo, JP;
Shotaro Mizobuchi, Kanagawa, JP;
Ebara Corporation, Tokyo, JP;
Abstract
A novel combination of sliding members operable both under dry (without lubrication) and wet (with lubrication) states, which comprises a first member made of a ceramic and a second member made of hard metal containing at least 75% by weight cemented carbide. This combination is useful as a bearing means in a pump of a vertical or inclined shaft type so as to permit actuation of the motor in the dry state and thereafter to continue operation of the pump with lubrication being provided by part of the liquid being pumped. In certain aspects, the ceramic member may be divided into a plurality of segments.