Appeal No. 2003-0895
Application No. 09/549,703
direction and comprised of at least one belt reinforcing layer
and a tread rubber arranged outside the belt in the radial
direction, a widthwise outer end of a belt reinforcing layer
having a widest width among the belt reinforcing layers is
located outward from a widthwise outer end of a belt layer having
a widest width in a widthwise direction of the tire, and wherein
when a maximum width of the carcass is L, the widthwise outer end
of the widest-width belt reinforcing layer is located between a
point P separated outward from the equatorial plane S by 0.375
times of L in the widthwise direction and a point Q separated
outward from the equatorial plane S by 0.45 times of L in the
widthwise direction, and said at least one belt reinforcing layer
comprises a reinforcing element embedded therein and extending in
a circumferential direction while having a wave or zigzag form.
The examiner relies upon the following references as
evidence of obviousness:
Iwata et al. (Iwata) 4,702,293 Oct. 27, 1987
Kohno et al. (Kohno) 5,054,532 Oct. 8, 1991
Appellants' claimed invention is directed to a pneumatic
radial tire comprising at least two belt layers and a belt
reinforcing member which, in turn, comprises at least one belt
reinforcing layer and a tread rubber arranged outside the belt in
the radial direction. The widthwise outer end of a belt rein-
forcing layer having a widest width among the belt reinforcing
layers is located outward from a widthwise outer end of a belt
layer having a widest width in a widthwise direction of the tire.
Also, the belt reinforcing layer comprises a reinforcing element
embedded therein and extending in a circumferential direction
while having a wave or zigzag form. According to appellants, the
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