US PATENT SUBCLASS 492 / 30
.~ Surface projections, indentations, or slits

Current as of: June, 1999
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492 /   HD   ROLL OR ROLLER

28  DF  WITH SPECIFIC ROLLER EXTERIOR SURFACE STRUCTURE {2}
30.~ Surface projections, indentations, or slits {5}
31  DF  .~.~> Plural direction alignnment of sets {1}
33  DF  .~.~> Radially aligned {1}
35  DF  .~.~> Helically aligned
36  DF  .~.~> Longitudinally aligned
37  DF  .~.~> Irregular or uneven arrangement; e.g., etched, shot blasted

DEFINITION

Classification: 492/30

Surface projections, indentations, or slits:

(under subclass 28) Roll in which the roll has a continuous outer surface which is generally cylindrical but has recesses or projections in or on it.

(1) Note. This subclass includes a roll with a grained, serrated, or roughened surface or a roll of which the surface has successive flats and arches.

SEE OR SEARCH CLASS

15, Brushing, Scrubbing, and General Cleaning,

224, for a wiper, dauber, or polisher with a working face made up of fabric in layers spaced apart to form channels or depressions between pairs of layers.

19, Textiles: Fiber Preparation,

54, for a gin roller, subclass 97 for a picking roller, subclass 112 for a carding cylinder, and subclass 128 for a combining cylinder.

72, Metal Deforming, 221+, for a metal deforming roller having axially separated grooves each providing a distinct work engaging "pass".

84, Music,

96, for a cylindrical comb with tuned teeth.

119, Animal Husbandry,

627, for a currycomb that moves during use.

171, Unearthing Plants or Buried Objects,

13, 93, 95+, 116, and 128 for a toothed rotary cylinder used to separate desired objects from the earth or break up earth material.

172, Earth Working,

122, for an earth working apparatus comprising a driven drum with teeth or blades, subclass 537 for a corrugated surface roller, and subclasses 540+ for a rolling earth working tool with circumferentially spaced teeth, tines, or blades.

301, Land Vehicles: Wheels and Axles,

41, for a wheel with a traction increasing device on the wheel-tread portion.