Appeal No. 97-2610
Application 08/236,809
The disclosures in the four applications are essentially
identical and pertain to a torsion isolator having, among
other features, (1) a spring disposed in a liquid pressure
dampener and functioning as a piston, (2) a pivot stop
associated with the spring, (3) a counterbalance associated
with the spring, and (4) a control means associated with the
spring for momentarily providing hydraulic slack or delay in
the dampening operation.
The claims in the four applications are directed to an
isolator having one or more of these features. As described
by the appellants, “[i]n brief, the gist[s] of the four
inventions in the ‘069, ‘809, ‘835 and ‘838 applications are
respectively the pivot stop D, the counterbalance C, the
momentary delay of dampening or hydraulic [slack] provided by
the control means E, and the spring A or A disposed in the 2 3
liquid pressure dampener B and functioning as a piston”
2
(brief, page 20 ). 4
4The appellants have used the letters A, B, C, D and E in
the brief to simplify reference to the various features of the
isolator.
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Last modified: November 3, 2007