Appeal No. 1998-1053
Application No. 07/974,832
in the comparing step wherein the estimated current target
pressure of the foamed furnish in the headbox is compared with
"a parameter derived from said density measurement and said
pressure measurements."
As a further point, we observe that independent claims 1,
5 and 24 include the negative limitation of "using neither
direct measurement of flow volume rate nor direct measurement
of flow velocity of the jet" (added to the application in
Paper No. 38, July 28, 1995) in the step of estimating a
current velocity, while claims 10, 11 and 14 set forth the
negative limitation of "using neither direct measurement of
flow velocity nor direct measurement of volume flow rate of
the jet" in the step of estimating a current velocity. In the
first instance, it is unclear whether the "flow volume rate"
is "of the jet" leaving the pressurized headbox or at some
other point in the system, and in the second instance it is
unclear whether the "flow velocity" is "of the jet" leaving
the pressurized headbox or at some other point in the system.
Thus, it is unclear exactly what is and is not included in
these claim recitations. Allowed claims 15 and 16 include the
9
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