US PATENT SUBCLASS 162 / 282
.~.~.~ Circumferentially grooved cylinder

Current as of: June, 1999
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162 /   HD   PAPER MAKING AND FIBER LIBERATION

232  DF  APPARATUS {22}
280  DF  .~ Web creping or crinkling type {1}
281  DF  .~.~ Cylinder and doctor {1}
282.~.~.~ Circumferentially grooved cylinder

DEFINITION

Classification: 162/282

(under subclass 281) Apparatus in which the cylinder is provided with continuous recesses extending around its outer surface in planes normal to the axis of the cylinder.

(1) Note. The circumferential grooves may be for the purpose of additionally longitudinally corrugating the product.

SEE OR SEARCH THIS CLASS, SUBCLASS:

296, for pulp web forming devices having a corrugated surface with no additional creping feature.