US PATENT SUBCLASS 451 / 540
RIGID TOOL


Current as of: June, 1999
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451 /   HD   ABRADING

540RIGID TOOL {4}
541  DF  .~> Rotary cylinder {5}
548  DF  .~> Rotary disk {3}
552  DF  .~> Stationary {4}
557  DF  .~> Having actuating handle {1}


DEFINITION

Classification: 451/540

RIGID TOOL:

(under the class definition) Inflexible instrumentality having (a) a work face that includes crystalline abrasive particles (e.g., emery, sand, corundum, etc.) and a supporting structure to which such particles are secured or (b) an abrasive containing composition molded to a particular shape.

SEE OR SEARCH THIS CLASS, SUBCLASS:

463+, for an expansible tool.

SEE OR SEARCH CLASS

51, Abrasive Tool Making Process, Material, or Composition, for a rigid abrasive tool distinguished solely by the abrasive composition.

241, Solid Material Comminution or Disintegration,

291+, especially subclasses 293+ for similar elements used in comminution.