Appeal No. 1996-3675
Application No. 08/259,933
small space defined between said electrode wire and
said covering.
The subject matter on appeal relates to a reference
electrode arrangement for a cathodic protection system of a
marine propulsion unit (appeal brief, page 3). According to
the appellant (id.), the reference electrode includes an
electrode wire within an elongated protective covering which
includes a plurality of openings. The appellant states that
the openings open into a small volume defined by the
protective covering and the electrode wire and that the outer
material of the electrode wire dissolves in the water,
saturating the solution surrounding the electrode wire with an
electrolyte comprising the electrode outer material (id.).
The appellant further states that the saturated solution
inhibits further electrode dissolution, thus prolonging the
life of the electrode (id.).
As evidence of unpatentability, the examiner relies upon
the following prior art references:
Watanabe et al. (Watanabe) 3,455,793 Jul. 15,
1969
Kuo et al. (Kuo) 4,163,698 Aug. 07,
1979
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