Energy Conversion Systems Holdings, LLC

Morganite Incorporated

John David Reece, Jr

Shepard Lynn Hockaday

Timothy Glenn King

Alvin Leon Farthing

Pimol Ballard Vonkchalee

Tony Earl Hall

Ray John Matthews

George Dane Goodson

Candace Stephenson Barefoot

Jeffrey Shaw Smith

Systems and methods for electrical component, e.g., brush, manufacture are provided that control grain orientation. The systems and methods utilize hot pressing techniques to enhance the properties and functionalities of the electrical components/brushes. An intermediate work product characterized by a grain orientation is initially formed through a conventional pressing technique. The conventionally-pressed intermediates are positioned within a cavity/die with the grain orientation in a predetermined orientation relative to the hot press force to be applied thereto. The hot pressed final product exhibits superior resistivity, strength and apparent density/durability. Surface features may be formed on the face(s) of the final work product during the hot pressing step that cannot be achieved in conventional processing techniques. Advantageous articles of manufacture, e.g., brushes and brush assemblies, are also disclosed.

Grain orientation control through hot pressing techniques

Addressed herein are commutators and methods of manufacturing them. The methods permit the carbonaceous material and core of a commutator to be molded simultaneously, rather than in a two-step process, and can eliminate one of two curing procedures used in connection with other manufacturing techniques. The necessity of machining the inner surface of the commutator shell to remove undesired excess phenolic or other material additionally is avoided by use of the techniques detailed herein. Commutators formed according to these methods may have increased useful lives and provide better performance than others presently available.

Methods and results of manufacturing commutators

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Erwin, NC, United States of America

John David Reece, Jr