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:
Jul. 23, 1991
Filed:
Nov. 08, 1989
Raghunath G Mokadam, Rockford, IL (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
An inexpensive autotransformer assembly adapted to withstand and operate under stingent conditions for permitting the flow of a fluid in both the axial and radial directions therethrough to cool both the core and the windings is disclosed. A first embodiment comprises an autotransformer assembly having a core and at least two groups of windings spaced apart thereon. The core includes a central cooling channel and a plurality of radial channels extending outwardly from the central cooling channel and terminating at openings in the outer surface of the core. A second embodiment comprises an autotransformer assembly having a core and at least two groups of windings thereon. A plurality of longitudinal spacers disposed on the outer surface of the core serve as a means for spacing the windings from the core in order to provide an axial coolant path along the outer surface of the core.