Appeal No. 2000-0068
Application 08/858,116
10. A method of shaping a sheet of glass heated nearly to a
softening point thereof with a suction mold including first
and second suction chambers having respective first and
second shaping surface areas, comprising the steps of:
placing the sheet of glass on a ring mold;
lowering said suction mold toward said ring mold to an
extent that the shaping surface areas come close to the
sheet of glass on said ring mold;
developing a first vacuum in said first suction chamber at a
first time to attract a first area of the sheet of glass
against the first shaping surface area to shape the first
area of the sheet of glass and then developing a second
vacuum in said second suction chamber at a second time to
attract a second area of the sheet of glass against the
second shaping surface area to shape the second area of the
sheet of glass complementary to the first area, said first
time being before said second time so that the sheet of
glass is successively brought against the first and second
shaping surface areas; and
then releasing the sheet of glass from the first and second
shaping areas of the suction mold onto a quenching ring and
moving the sheet of glass on the quenching ring to
quenching.
THE REFERENCES
The references of record which are being relied on by the
examiner as evidence of obviousness are:
Seymour 4,229,200 October 21, 1980
Kuster et al. (Kuster) 4,859,225 August 22, 1989
McMaster 4,609,391 September 2, 1986
THE REJECTIONS
Claims 5 through 8 and 10 stand rejected under 35 U.S.C.
§ 103 as being unpatentable because the subject matter claimed
therein would have been obvious at the time appellants made their
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