US PATENT SUBCLASS 152 / 209.18
.~.~.~ Having groove or sipe with specified dimension or structure therewithin


Current as of: June, 1999
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152 /   HD   RESILIENT TIRES AND WHEELS

151  DF  TIRES, RESILIENT {14}
208  DF  .~ Anti-skid devices {8}
209.1  DF  .~.~ Tread {13}
209.18.~.~.~ Having groove or sipe with specified dimension or structure therewithin {8}
209.19  DF  .~.~.~.~> Protrusion from bottom and spaced from both walls (e.g., pebble ejector, etc.)
209.21  DF  .~.~.~.~> Protrusion from wall and spaced from the opposite wall
209.22  DF  .~.~.~.~> Protrusion bridging between walls (e.g., tie bar, etc.)
209.23  DF  .~.~.~.~> Both walls inclined in same direction
209.24  DF  .~.~.~.~> Having angle of inclination of one wall different from that of opposite wall
209.25  DF  .~.~.~.~> Having grooves or sipes with different specified depths
209.26  DF  .~.~.~.~> Having circumferential groove width at least 10 per cent of tread width
209.27  DF  .~.~.~.~> Having continuous circumferential narrow width groove (i.e., less than 5mm.)


DEFINITION

Classification: 152/209.18

HAVING GROOVE OR SIPE WITH SPECIFIED DIMENSION OR STRUCTURE THEREWITHIN:

Tread under 209.1 having recesses identified as grooves, incisions, channels, calfs, narrow slits, cuts, or kerfs with specified dimensions (e.g., width, wall angle, depth, etc.) or characteristics of within-groove structure.