Appeal No. 1999-1134
Serial No. 08/334,465
means for introducing a cooling medium adjacent
radially inner portions of said slots;
each stacked rotor turn having an opening in
communication with a radially adjacent registering
opening of an adjacent stacked turn for flowing the
cooling medium from said introducing means through
the registering openings in a radially outward
direction;
a protuberance carried by at least one rotor
turn projecting into and transverse to the direction
of flow through the opening and extending in a
generally circumferential direction affording a
turbulent flow of the cooling medium through the
opening of the one rotor turn for positively mixing
cooling medium in the opening adjacent the
protuberance and cooling medium adjacent a central
portion of the opening;
each turn having opposed wall surfaces with one
wall surface having said protuberance projecting
toward a second opposite wall surface, said second
wall surface being relatively smooth.
The Examiner relies on the following references:
Laffoon et al (Laffoon) 1,985,040 Dec. 18, 1934
Kaminski 4,709,177 Nov. 24, 1987
Schneider et al (Schneider) 5,491,370 Feb. 13, 1996
(filed Jan. 28, 1994)
Claims 11, 13 and 22-24 stand rejected under 35 U.S.C. §
103 as being unpatentable over either Laffoon et al or
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