Appeal No. 1999-1818 Page 2
Application No. 08/586,806
BACKGROUND
The appellants' invention relates to a push rod (claims 1-5) comprising an aluminum
alloy rod body and a steel ball bonded by resistance welding to one end of the rod body and a
process for producing the push rod (claims 7, 8 and 10). The resistance welding process yields
"biting-in" portions in the rod body into the steel ball and an aluminum layer formed on the
surface of the steel ball. Further understanding of the invention can be derived from a reading
of exemplary claims 1 and 7, which are reproduced in the opinion section of this decision.
The prior art references of record relied upon by the examiner in rejecting the appealed
claims are:
Macura 2,975,775 Mar. 21, 1961
Enda et al. (Enda) 61-279711 Dec. 10, 1986
(Japanese patent publication)
Sugiyama et al. (Sugiyama) 57-29069 Jun. 25, 19821
(Japanese patent publication)
The following rejections are before us for review.
Claims 1-4, 7, 8 and 10 stand rejected under 35 U.S.C. § 103 as being unpatentable
over Macura in view of Enda.
Claims 1, 2 and 5 stand rejected under 35 U.S.C. § 103 as being unpatentable over
Macura in view of Sugiyama.
1English language translations of the Enda and Sugiyama references, prepared by the Patent and Trademark
Office, are appended hereto.
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