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:
Jan. 05, 2021
Filed:
Apr. 14, 2017
Applicants:
Eagle Industry Co., Ltd., Tokyo, JP;
Eagleburgmann Japan Co., Ltd., Tokyo, JP;
Inventors:
Yoshiaki Takigahira, Tokyo, JP;
Masakazu Kito, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 15/34 (2006.01); F16J 15/36 (2006.01); F16J 15/38 (2006.01);
U.S. Cl.
CPC ...
F16J 15/363 (2013.01); F16J 15/3452 (2013.01); F16J 15/3464 (2013.01); F16J 15/36 (2013.01); F16J 15/38 (2013.01);
Abstract
In a bellows mechanical seal, a collar attached to a seal ring through a bellows has a restriction piece extending toward at least one of an inner diameter side or an outer diameter side. The bellows mechanical seal includes an adaptor which is attached to the collar, whose axial movement is restricted by the restriction piece, and which extends to the inner diameter side or the outer diameter side over the restriction piece. The collar and the adaptor form at least part of a housing space (S), (S') having the secondary seal housed therein.