Appeal No. 97-4081
Application 08/379,793
by an electric motor or hydraulic jacks controlled by a pump.
See column 5, lines 24 through 33. In the instance where the
cylinders are hydraulic, the cylinders would be composed of a
piston slidably mounted therein with one part of the cylinder
or piston contacting the contact surface via the agency of
wheel 25. It must be emphasized that in the hydraulic embodi-
ment, the cylinders of the reference would be "in fluid commu-
nication" with the pump "to allow the contact surfaces to
extend or retract
relative to the respective supports." While claim 1 and the
claims dependent thereon do not require the cylinders to be in
fluid communication with one another or be interconnected by
a conduit, they do require that the cylinders extend or
retract equally and oppositely of each other. It is clear
that the cylinders of Chatenay épouse Compagnone when in fluid
communi- cation with the pump do not provide for this opposite
and equal movement. Therefore, it can be seen that the
Chatenay épouse Compagnone reference fails to disclose each
and every element of claims 1 through 4.
4
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