Appeal No. 97-0612
Application 08/322,218
The invention relates to “the production of metal strips
suitable for use in the coils of power transformers”
(specification, page 1). Copies of claims 1 through 3 appear in
the appendix to the appellants’ main brief (Paper No. 10).
The references relied upon by the examiner as evidence of
obviousness are:
Skinner 1,847,365 Mar. 1, 1932
Sparks 2,133,874 Oct. 18, 1938
Vaughan 4,564,347 Jan. 14, 1986
Claims 1 through 3 stand rejected under 35 U.S.C. § 103 as
being unpatentable over Vaughan in view of Sparks and Skinner.
Reference is made to the appellants’ main and reply briefs
(Paper Nos. 10 and 12) and to the examiner’s first Office action
and answer (Paper Nos. 6 and 11) for the respective positions of
the appellants and the examiner with regard to the merits of this
rejection.
Appealed claims 1 and 2 recite a method of forming a
continuous flat metal strip comprising, inter alia, the steps of
feeding first and second rod-like billets to circumferential
grooves formed in a rotating wheel, and advancing the billets
such that metal therefrom flows through a die opening having a
discontinuous, annular cross section to form a continuous tube of
circular cross section having a slit formed therein. Appealed
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