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:
Sep. 18, 2001
Filed:
Jun. 15, 2000
Joseph E. Miller, Fort Wayne, IN (US);
David W. Blue, Union, OH (US);
A. O. Smith Corporation, Milwaukee, WI (US);
Abstract
A counter weight system for an electric motor having a rotor with an end ring, the end ring having an outer surface, and at least one deformable lug extending from and a plurality of projections extending radially across the outer surface. The counter weight system includes a rotor counter weight having an inner surface abutting the end ring end surface; an outer surface opposite the inner surface; at least one bore through the rotor counter weight and receiving a lug, the lug being deformed to axially fix the rotor counter weight; a plurality of recesses in the inner surface, each recess receiving an end ring projection so as to prevent rotational movement of the rotor counter weight with respect to the end ring; and a plurality of rotor counter weight projections extending radially across the outer surface. The counter weight system also includes a generally circular shaft counter weight having an inner surface abutting the rotor counter weight outer surface, and a plurality of recesses in the shaft counter weight inner surface, each recess receiving a respective a rotor counter weight projection so as to prevent rotational movement of the shaft counter weight with respect to the rotor counter weight.