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Lamination cooling system formation method

United States Patent

May 12, 2009
View the Complete Patent at the US Patent & Trademark Office
An electric motor, transformer or inductor having a cooling system. A stack of laminations have apertures at least partially coincident with apertures of adjacent laminations. The apertures define straight or angled cooling-fluid passageways through the lamination stack. Gaps between the adjacent laminations are sealed by injecting a heat-cured sealant into the passageways, expelling excess sealant, and heat-curing the lamination stack. Manifold members adjoin opposite ends of the lamination stack, and each is configured with one or more cavities to act as a manifold to adjacent passageway ends. Complex manifold arrangements can create bidirectional flow in a variety of patterns.
Rippel; Wally E. (Altadena, CA), Kobayashi; Daryl M. (Monrovia, CA)
Aerovironment Inc. (Monrovia, CA)
11/ 242,823
October 3, 2005
This invention was made with Government support under grant DE-FG03-00ER829-40 awarded by the Department of Energy. The Government has certain rights in this invention.