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.:

US 7777383 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 17, 2010

Filed:

Aug. 24, 2005
Applicant:

Doris Wilsdorf, Charlottesville, VA (US);

Inventor:

Doris Wilsdorf, Charlottesville, VA (US);

Assignee:

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 31/00 (2006.01); H02K 21/26 (2006.01); H02K 21/38 (2006.01);
U.S. Cl.
CPC ...
Abstract

MP-A and MP-T machines are members of the Multipolar (MP) family of electric motors/generators and have similarly low weight and high power densities. Their current tubes comprise conductive 'S-ribbons' in electrically non-conductive material. S-ribbons are shaped so as in operation to periodically substantially overlap a multiplicity of neighboring zones of high magnetic B-field, alternating with gaps with low B in which B changes sign. Accordingly, MP-A and MP-T machines, respectively, generate AC and 3-phase current in the generator mode, and as motor are driven by AC or 3-phase at the appropriate frequency. Two modifications are introduced: (i) Machines with stationary magnet tubes/rotating current tube and (ii) machines with stationary current tube/rotating magnet tubes. The latter do not require electrical brushes and are eminently suited for simultaneous multiple uses. Also, these may operate while immersed in hostile fluids, including sea water.


Find Patent Forward Citations

Wilsdorf, Doris. (2010). Mp-a and mp-t machines, multipolar machines for alternating and three-phase currents (U.S. Patent No. 7777383). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7777383

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