Appeal No. 2003-0786
Application 09/059,712
Like appellant, we are of the view that there is no
teaching, suggestion or motivation to combine Grimm and Dmitroff.
Grimm discloses an improved wrenching configuration that employs
the principle of spline wrenching in connection with fasteners
such as nuts and bolts and with wrenches for such fasteners.
More specifically, Grimm addresses the use of symmetrical spline
configurations which provide optimum mutual engagement between
the inner and outer mated components and also seeks to provide
splines of a particular symmetrical shape so that essentially all
wrenching forces are directed into a wrenching torque and little
or no component of such forces is in a direction which would tend
to burst the outer member, or wrench.
Dmitroff discloses a “constant torque nut” wherein the
torque control is present in the nut itself and the nut may be
tightened by an ordinary wrench to a preset maximum amount which
cannot be exceeded. More particularly, Dmitroff discloses a
constant torque nut (10) including an inner shell or nut portion
(12) and a driving or tightening ring (20) mounted on nut portion
(12) and held in place thereon by a split lock-ring or lock-
washer (30). The nut portion (12) is provided on an external
surface thereof with a series of ratchet-like teeth or serrations
(16) which extend circumferentially around the nut portion. As
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