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:
Apr. 09, 1991
Filed:
Jul. 06, 1989
Edmund A Schott, Rockford, IL (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
In a brushless generator having an exciter rotor (18) which generates an AC voltage that is rectified to provide a DC field for a main generator rotor (16), the rectifiers are mounted to revolve with the rotor and be fluid and conductively cooled to provide a dynamo operative without brushes, slip rings or commutators. The rectifier is formed by a diode assembly (24) including layers of insulating and conducting material that are mounted concentrically on the inside wall of a hollow rotor shaft (20) so that diode chips are stressed only in compression due to centrifugal forces of rotation. An input driven shaft (32) may be accommodated interiorly of the diode assembly (24) along the axis of the hollow rotor shaft (20). The dynamo electric machine may also be operated as a brushless motor.