Appeal No. 1996-1736
Application 08/418,267
DECISION ON APPEAL
This is an appeal from the final rejection of claim 17.
The disclosed invention relates to a bipolar air ionizing
apparatus for generating and releasing a flow of air that
includes intermixed positive and negative ions.
Claim 17 is the only claim on appeal, and it reads as
follows:
17. Bipolar air ionizing apparatus for generating and
releasing a flow of air including intermixed positive and
negative ions, comprising:
a housing having an air inlet passage and an ionized air
outlet passage that is spaced apart from said inlet passage;
a fan disposed in said housing to draw a flow of air into
said housing through said inlet passage for directing a flow
of air and ions through said outlet passage and out into the
external environment, said fan having a rotary hub and blades
which include electrically insulating material on the surface
thereof and which turns about a rotational axis that is
aligned between said air inlet passage and said air outlet
passage;
a cylindrical air duct of electrically insulating
material encircling said fan and being concentrically oriented
on said rotational axis to extend from said fan to said air
outlet passage;
first and second pairs of air ionizing electrodes
disposed in said housing at a location in the air flow path
between said air inlet passage and said fan for producing
positive ions about each of the first pair of electrodes and
for producing negative ions about each of the second pair of
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