Appeal No. 1998-1086
Application No. 08/513,106
Claim 4 is illustrative of the claimed invention, and it
reads as follows:
4. A transformer comprising:
a first winding comprising a coil portion with
a substantially closed cross section, said
coil portion comprising metal of sufficient
thickness to hold said substantially closed
cross section with no external force;
a second winding having a coil portion thereof
wound around said coil portion of said first
winding;
a third winding comprising a coil portion with
a substantially closed cross section, said coil
portion comprising metal of sufficient thickness
to hold said substantially closed cross section
with no external force, wherein said coil portion
is disposed about said coil portion of said second
winding;
wherein said first winding and said third winding
are mechanically and electrically coupled with a
fastener which forms a center tap.
The references relied on by the examiner are:
Charpentier 4,176,335 Nov. 27,
1979
Brodzik et al. (Brodzik) 4,748,405 May
31, 1988
Claims 4, 6, 8 through 10, 16 and 18 through 20 stand
rejected under 35 U.S.C. § 103 as being unpatentable over
Charpentier in view of Brodzik.
3
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