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.

Date of Patent:
Oct. 11, 1988

Filed:

Jul. 21, 1986
Applicant:
Inventor:

Teruo Akema, Saitama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277 88 ; 277 87 ; 277 961 ; 277 962 ;
Abstract

A mechanical seal for a fluid pump wherein a driven ring is mounted in the pump casing and a seat ring is mounted on the pump vane. The two rings have opposed, radial faces for effecting the mechanical seal. The face on the seat ring is of a smaller width in the radial direction than the face of the driven ring so that any axial misalignment of the driven ring relative to the vane shaft does not effect the area of engagement on the two faces that form the seal, that is, the annular engagement area on the driven ring remains constant and coextensive with the engaging face of the seat ring.


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