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.

Date of Patent:
Aug. 09, 2005

Filed:

Feb. 22, 2002
Applicants:

Chih M. Lin, Tipp City, OH (US);

Norm R. Long, Tipp City, OH (US);

William J. Watkins, Tipp City, OH (US);

Ron Hirth, Troy, OH (US);

Inventors:

Chih M. Lin, Tipp City, OH (US);

Norm R. Long, Tipp City, OH (US);

William J. Watkins, Tipp City, OH (US);

Ron Hirth, Troy, OH (US);

Assignee:

A. O. Smith Corporation, Milwaukee, WI (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B017/03 ; H02K005/00 ;
U.S. Cl.
CPC ...
Abstract

An apparatus comprising a driven element, a driving element operably coupled to the driven element, and a shield coupled to the driving element such that the shield at least partially covers at least one of the driven element and the driving element. The driven element includes a housing with an outer surface. The outer surface has a first raised portion and a first non-raised portion, the first non-raised portion at least partially surrounding the first raised portion, the first raised and first non-raised portions define a first surface pattern. The shield has an outer surface with a second raised portion and a second non-raised portion. The second non-raised portion at least partially surrounds the second raised portion, defining a second surface pattern substantially similar to the first surface pattern.


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