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US 8,853,908 B2Granted
Magnet rotor assembly including a vacuum impregnated bonded magnet having increased crush strength at high temperatures
AssigneeMBS Engineering, LLC
InventorsStanley Byron Musselman, Edward E Welker, Mitchell L Spencer, Viswanathan Panchanathan
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Abstract
A magnet rotor assembly comprises a magnet sleeve held on a rotor shaft by a rigid adhesive layer that includes at least one axial wedge shape corresponding to an axial irregularity on at least one of the surfaces bonded by the adhesive layer. Improved crush strength in the magnet sleeve and in other bonded metal parts, both initially and after exposure to high temperatures is accomplished by impregnating the parts with a curable resin.
Claims14
A bonded powdered metal magnet comprising:
- a. a bonded powdered metal magnet with pores and of a predetermined shape;
- and
- b. an anaerobically cured resin vacuum impregnated into the pores of the bonded powdered metal magnet
- wherein the resin remains in the pores and provides the bonded powdered metal magnet with improved crush strength at elevated temperatures.
1 more element
Dependencies are inferred from the claim text.