US PATENT SUBCLASS 172 / 540
.~ Tool has circumferentially spaced teeth, tines, blades or the like

Current as of: June, 1999
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172 /   HD   EARTH WORKING

518  DF  ROLLING, ROTATING OR ORBITALLY MOVING TOOL {30}
540.~ Tool has circumferentially spaced teeth, tines, blades or the like {13}
541  DF  .~.~> With means for preventing ground engagement of teeth or blades
542  DF  .~.~> Tooth or blade on endless carrier
543  DF  .~.~> Spring tooth or blade
544  DF  .~.~> Spring moving or mounting means for tooth or blade
545  DF  .~.~> Blades or teeth change position relative to each other or rotating support during rotation {1}
547  DF  .~.~> With cleaning means
548  DF  .~.~> Tooth or blade units on single axle {1}
550  DF  .~.~> Tooth or blade adjustable on carrier
551  DF  .~.~> Rolling tool spring biased into ground contact
552  DF  .~.~> Laterally extending bar or blade with skeleton support (e.g., lawn mower type, etc.) {1}
554  DF  .~.~> Drum with axially spaced teeth or blades
555  DF  .~.~> Integral disk
556  DF  .~.~> Tooth or blade axially clamped to hub face (e.g., hoe wheel type, etc.)

DEFINITION

Classification: 172/540

(under subclass 518) Apparatus in which the rolling or rotating earth working element has teeth, tines, projections, blades, or other configurations spaced circumferentially in a plane generally at right angles to the axis of rotation to engage the earth intermittently or with a varying effect as the effect as the earth working element turns.

(1) Note. This definition includes those devices in which earth working teeth, tines, or blades are attached to wheels or rollers to convert them to the kind of earth working element set forth in the definition. Apparatus in which a wheel element is attached to a toothed element for purposes of transportation is found in subclass 243.

SEE OR SEARCH THIS CLASS, SUBCLASS:

118+, for similar earth working elements which are mounted on a transverse axis and provided with a means for driving said elements through a cycle of operation.

177, for diverse tools, one of which is of the rolling type having circumferentially spaced blades, tines, or the like.

532, for a rolling tool with screw- or spirally arranged blades or teeth. SEE OR SEARCH CLASS

56, Harvesters,

377, for side delivery horse rakes having tined rotary raking elements.

111, Planting,

159, for a tined rotary furrow opener claimed in combination with a planting machine.

171, Unearthing Plants or Buried Objects,

93, 95+, 116, and 128 for rolling a rotating means provided with circumferentially spaced teeth or blades.

301, Land Vehicles: Wheels and Axles,

40.1, for emergency tires having traction increasing lugs or blades fastened thereto, and subclasses 43+ for wheels having traction increasing means in the form of projecting spurs or cleats.

404, Road Structure, Process, or Apparatus,

121, for a sheep's foot roller.

452, Butchering, 141+, for meat tenderizing rollers having circumferentially,

spaced teeth, blades, or the like.

492, Roll or Roller,

30+, for a roll, per se, not elsewhere provided for, having surface projections, indentations or slits.