Appeal No. 2002-0500 Page 3
Application No. 09/258,320
feature a step section 22. A bell mouth 19 overlays the step sections 22 to prevent the
blades from coming off. (Appeal Br. at 3.)
A further understanding of the invention can be achieved by reading the following
claim.
1. A motor comprising:
(a) a frame;
(b) a frame-housing provided on said frame;
(c) a stator secured on an outer wall of said frame-housing;
(d) a sleeve fit into said frame-housing;
(e) a thrust supporter unitary with a bottom face of said frame
housing;
(f) a shaft supported by said thrust supporter at an end of said
shaft, said shaft being inserted into said sleeve and rotatably supported by
said sleeve;
(g) a rotor secured to said shaft;
(h) a magnet disposed on said rotor and opposite to said stator;
and
(i) oil provided in a space between said shaft and said sleeve;
wherein a dynamic-pressure-generating-groove for retaining oil and
generating dynamic-pressure by relative rotation between said shaft and
said sleeve is formed on one of an outer wall of said shaft and an inner
wall of said sleeve.
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