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:
Oct. 18, 1977
Filed:
Dec. 27, 1976
Applicant:
Inventors:
Donald F Hoeg, Mount Prospect, IL (US);
John J Tuzson, Evanston, IL (US);
Assignee:
Borg-Warner Corporation, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277 13 ; 277 80 ; 277135 ;
Abstract
An improved dynamic shaft seal particularly useful with submersible pumps employing in combination magnetic fluid seals and a centrifugal seal filled with a magnetic seal fluid, wherein the centrifugal seal provides sealing at high rotational speeds, and the magnetic seals prevent escape of fluid from the centrifugal seal chamber at low rotational speeds.