Appeal 2007-1902
Application 09/398,006
24. A pneumatic radial tire comprising:
a radical carcass having at least one rubberized cord ply extending
between a pair of bead cores embedded in a pair of bead portions and
reinforcing a pair of sidewall portions and a tread portion,
a belt reinforcing the tread portion at an outside of the carcass and
consisting of three rubberized cord layers each containing steel cords
therein, an innermost cord layer and a middle cord layer among these cord
layers being a cross cord layer that cords of the layers are crossed with each
other with respect to an equatorial plane of the tire, and
one or more circumferential grooves provided in at least each side
region of the tread portion,
in which the cords of each of the innermost cord layer and the middle
cord layer have an inclination angle of 10-25° with respect to the equatorial
plane, and cords of an outermost cord layer have an inclination angle of not
less than 45° and less than 90° with respect to the equatorial plane as
measured in the same direction as in the cords of the middle cord layer, and
the outermost cord layer has a width extending toward an end of the tread
portion over an outermost groove edge of an outermost circumferential
groove in a widthwise direction of the tread portion and being narrower than
a width of the innermost cord layer, and a coating rubber for the cords of the
outermost cord layer has a compression modulus of not less than 200
kgf/cm2.
The Examiner relies on the evidence in these references:
Imamura US 3,913,652 Oct. 21, 1975
Farnsworth GB 1 483 053 Aug. 17, 1977
Gaudin US 5,591,284 Jan. 7, 1997
Okamoto US 5,779,828 Jul. 14, 1998
Kohno US 5,968,295 Oct. 19, 1999
Appellants request review of the following grounds of rejection under
35 U.S.C. § 103(a) (Br. 9), all advanced on appeal:
claims 1, 3 through 5, 24 through 261 as unpatentable over Farnsworth in
view of Gaudin and Kohno (Answer 4-9);
1 We state this ground as set forth in the Brief (Br. 9), held “correct” by the
Examiner (Answer 2; see also 4).
3
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