Appeal No. 1997-3264
Application 08/501,769
therefore, has not carried the burden of establishing a prima
facie case of anticipation over Valimont. Although, as
pointed out by the examiner, appellants’ claims do not require
any particular amount of tensioning, the examiner has not
provided any evidence or technical reasoning which shows that
any tensioning at all necessarily would be produced by holding
Valimont’s upper glass sheet using vacuum cups.
Rejections over Stebbins or Evans
Stebbins discloses a method and apparatus for sealing
overlapping portions of adjacent roofing sheets (page 1, right
column, lines 13-16). A shoe-shaped heater is inserted
between lapped portions of the sheets and is pushed along the
seam to melt the bituminous coating on the underside of the
upper sheet and top side of the lower sheet, and the pressure
of the operator’s feet as he walks along behind the device
presses together the melted bituminous coatings on the sheets,
thereby bonding the edges of the sheets (page 1, right column,
lines 16-30; page 2, right column, lines 18-23 and 49-61).
Evans discloses an applicator for applying mastic under
shingles (col. 1, lines 9-13). The applicator lifts the next
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