Pumps – Combined
Reexamination Certificate
2005-08-09
2005-08-09
Freay, Charles G (Department: 3746)
Pumps
Combined
C417S410100, C417S423140, C310S089000
Reexamination Certificate
active
06926502
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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Hirth Ron
Lin Chih M.
Long Norm R.
Watkins William J.
A. O. Smith Corporation
Freay Charles G
Michael & Best & Friedrich LLP
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