Appeal No. 1996-3770 Page 2
Application No. 08/412,834
This is a decision on appeal from the examiner's refusal
to allow claims 1 through 9, which are all of the claims
pending in this application.
BACKGROUND
The appellant's invention relates to a process for
treating a copper-beryllium alloy to obtain substantially
uniform formability in both parallel and perpendicular rolling
directions. An understanding of the invention can be derived
from a reading of exemplary claim 1, which is reproduced below.
1. A treatment process for providing substantially
uniform formability in both a perpendicular and a parallel
rolling direction of a strip of a copper-beryllium alloy
consisting essentially of from 0.38% to about 0.6% beryllium,
from about 1.4% to about 2.2% nickel, from about 0% to about
2.1% cobalt, no greater than about 0.5% selected from the group
consisting of titanium and zirconium and mixtures thereof, and
at least about 90% copper, wherein the alloy has been cold
worked to a ready-to-finish gauge, comprising the steps of:
(a) annealing the cold worked ready-to-finish gauge
copper-beryllium alloy strip at a temperature from about 1500°F
to 1600°F;
(b) further cold working the annealed copper-beryllium
alloy strip to reduce its gauge by an amount in a range from
about 20% to about 60%; and
(c) age hardening the further cold-worked copper-beryllium
alloy strip at a temperature of from about 700°F to 950°F for
about 1 to about 7 hours to produce substantially uniform
formability in both the parallel and perpendicular rolling
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