US PATENT SUBCLASS 451 / 542
.~.~ Circular segments


Current as of: June, 1999
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451 /   HD   ABRADING

540  DF  RIGID TOOL {4}
541  DF  .~ Rotary cylinder {5}
542.~.~ Circular segments {1}
543  DF  .~.~.~> Detachable


DEFINITION

Classification: 451/542

Circular segments:

(under subclass 541) Rotary cylindrical abrading tool comprised of a plurality of preformed blocks of material containing an abrasive which when assembled together, along the circumference of a circle, form a complete cylinder or cylindrical annulus.

(1) Note. The blocks of material may be claimed with or without other means for holding, cementing, or spacing the blocks.

SEE OR SEARCH THIS CLASS, SUBCLASS:

541+, the parent of this subclass, for a tool formed from a single monolithic or molded piece, even though the abrading surfaces may be discontinuous.

544, for a tool which is formed of a plurality of blocks of material containing an abrasive but in which each of the blocks forms a complete cylindrical abrading surface.

SEE OR SEARCH CLASS

492, Roll or Roller,

30+, for a roll, per se, comprising segmental sections.