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Asphalt pavement milling machine and cutter drum therefor

  • US 5,078,540 A
  • Filed: 08/24/1990
  • Issued: 01/07/1992
  • Est. Priority Date: 08/24/1990
  • Status: Expired due to Fees
First Claim
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1. A cutter drum adapted for milling a roadway surface so as to remove a layer of asphalt or the like, and comprisinga cylindrical drum surface defining a central axis,a plurality of flighting assemblies fixed to said surface of the cutting drum in a helical configuration, with each flighting assembly comprising(a) a base plate having an inner edge fixed to said surface of said drum, an outer edge generally concentric to said surface of said drum, an inner side surface and an opposite outer side surface, and with said base plate being aligned with a plane which perpendicular intersects said central axis,(b) a rear support block fixed to said outer side surface of said base plate, said rear support block having an outer surface on the side thereof opposite said base plate,(c) a forward support block fixed to said outer side surface of said base plate and spaced from said rear support block so as to define a channel therebetween which is directed generally radially with respect to said central axis, and with said forward support block having an outer surface on the side thereof opposite said base plate,(d) a tooth holder positioned in said channel and having an outer portion which extends radially above said outer edge of said base plate,(e) means releasably mounting said tooth holder in said channel, and(f) a cutting tooth mounted to said outer portion of said tooth holder,said flighting assemblies being arranged in a laterally side by side and circumferentially offset relationship so as to define said helical configuration, and with said outer surface of at least one of said rear and forward support blocks and the adjacent surface portion of said tooth holder of each flighting assembly being covered by the inner side surface of the base plate of an adjacent flighting assembly.

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