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:
Aug. 12, 1997
Filed:
Apr. 22, 1996
Applicant:
Inventors:
Assignee:
Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Tokyo-to, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ; F01C / ;
U.S. Cl.
CPC ...
277 961 ; 277 962 ; 277181 ; 4182011 ;
Abstract
A seal device for a Lysholm compressor has a carbon seal ring and a metal maintaining ring arranged peripherally of a shaft of a male or female rotor, the seal ring being pressed against the maintaining ring to achieve sealing. Square root of a sum of square of surface roughness of the seal ring and square of surface roughness of the maintaining ring is in the range of 0.8 to 2.5 Z, which prevents occurrence of blisters on a surface of the seal ring and leaked oil amount can be within the leakage permissible level.