Appeal No. 95-0746
Application 07/945,036
Independent claim 1 is directed to an electrical alternator
in which the improvement provided is recited as
a coating of a resinous material on the exposed housing
surfaces of said windows through which said stator
lead wires extend from their respective stator windings
. . . thereby providing electrical insulation between
said lead wires and said housing.
Independent claim 5 sets forth the invention in the context of an
alternator heat sink element for an automotive alternator, and
independent claim 6 as an alternator including a rectifier
assembly, a heat sink housing element, and a set of stator
windings.
All of the claims stand rejected as being unpatentable over
the prior art described by the appellants in Figure 2 of their
drawings, taken in view of Armbruster and Lakin. The examiner
points out that Armbruster teaches a rectifier structure in which
the stator wires are bare but are contained in an insulated
passage, and that Lakin teaches utilizing an epoxy coating over a
stator core to electrically insulate the core windings from the
core itself. From this, the examiner concludes it would have
been obvious to place resin material around the windows in the
heat sink through which the stator wires pass in the device shown
in the appellants' Figure 2 because "[t]his would eliminate at
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Last modified: November 3, 2007