Appeal No. 2004-1784
Application No. 09/685,372
track 1 has an outer tread comprised of a plurality of raised
rubber lugs 3 and an inner surface comprised of a plurality of
rubber guide lugs 5 designed to be guided and/or engaged by a
vehicular drive wheel and a rubber guide lug support layer 5A,
wherein the guide lugs are positioned on and co-vulcanized and
integral with the guide lug support layer and wherein the guide
lug support layer is positioned on and integral with the inner
surface of the rubber track. The aforementioned guide lug
support layer is of a rubber composition comprised of certain
elastomers, a reinforcing filler and a coupling agent. Further
details concerning this composition are set forth in
representative independent claim 11 which reads as follows:
1. An endless rubber track designed to encompass a
combination of at least one vehicular drive wheel and at least
one vehicular guide wheel is provided wherein said rubber track
has an outer tread comprised of a plurality of raised rubber lugs
designed to be ground engaging and an inner surface comprised of
a plurality of spaced apart rubber guide lugs designed to be
guided and/or engaged by said vehicular drive wheel, and a rubber
guide lug support layer, wherein said guide lugs are positioned
on and co-vulcanized and integral with said guide lug supporting
rubber layer, wherein said guide lug support layer is positioned
on and integral with the inner surface of said rubber track; and
wherein said guide lug support layer is of a rubber composition
comprised of, based upon 100 parts by weight elastomers (phr),
1
1 On line 7 of claim 1, the following informality is present
and is deserving of correction: the phrase “said guide lug
supporting rubber layer” lacks strict antecedent basis and should
read -–said guide lug support layer –-.
2
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Last modified: November 3, 2007