Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2002-05-08
2003-09-30
Tamai, Karl (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S247000, C310S239000, C310S245000, C439S029000
Reexamination Certificate
active
06628036
ABSTRACT:
The present invention relates generally to the transfer of electrical current between spaced surfaces.
STATEMENT OF GOVERNMENT INTEREST
The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefore.
BACKGROUND OF THE INVENTION
An important object of the present invention is to increase performance and reduce maintenance in electric power production, distribution and utilization systems, such as found on present and future naval ships and submarines. An example would include electrical current transfer devices associated with homopolar motors which may be used in future naval propulsion systems.
SUMMARY OF THE INVENTION
In accordance with the present invention, electrical energy is transferred from a DC power source to the stator of a homopolar motor, through an input conductor suitably fastened to a composite type of spring device exerting a low holding force on a stationary brush to conduct electrical current to metal fibers of such brush soldered to the spring device to thereby position the brush in contact with the moving surface of a rotor with reduced wear. The spring device has a serpentine shape and a flexible braided wire core that is elastomerically coated to provide protection and enhance establishment of the requisite degree of brush holding force and thereby also avoid use of hard pipes for current conducting purposes.
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Fikse Thomas H.
Lynch William A.
Petersen Lynn J.
Sondergaard Neal A.
Pham Leda
Shuster Jacob
Tamai Karl
The United States of America as represented by the Secretary of
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