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:
Dec. 31, 1991
Filed:
Jan. 30, 1990
Applicant:
Inventor:
Arthur H Iversen, Saratoga, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
378200 ; 378144 ; 378132 ; 378199 ;
Abstract
There is disclosed a unitized rotating shaft assembly comprising an outer alignment sleeve within which are mounted a rotating ferrofluid seal, a first bearing, a stator a second bearing and a rotating union; there being a first follow shaft affixed to the inner races of the first and second bearing, the hollow shaft having stators mounted opposing the rotor and there being a second hollow shaft concentric with the first hollow shaft to provide separate conduits for the input and discharge of coolant.