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:
Feb. 14, 2017
Filed:
Apr. 27, 2015
Applicant:
Eagle Industry Co., Ltd., Tokyo, JP;
Inventor:
Hidekazu Takahashi, Tokyo, JP;
Assignee:
Eagle Industry Co., Ltd., Minato-Ku, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J 15/34 (2006.01); F16J 15/36 (2006.01);
U.S. Cl.
CPC ...
F16J 15/363 (2013.01); F16J 15/348 (2013.01); F16J 15/3496 (2013.01); F16J 15/36 (2013.01); F16J 15/34 (2013.01);
Abstract
A bellows type mechanical seal including a sealing ring and a mating ring, wherein either one of the sealing ring or the mating ring is retained in a housing and the other one is mounted on a shaft and wherein the sealing ring is supported by a bellows and the bellows has a retainer welded thereto on one of the sides for retaining the sealing ring and a collar welded on the other side to form a bellows assembly, is characterized in that the entire surface of the bellows assembly is covered by an erosion-resistant film formed by the physical vapor deposition, such as ion-plating.