US PATENT SUBCLASS 100 / 150
.~.~ Helix interengaging abutment

Current as of: June, 1999
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100 /   HD   PRESSES

144  DF  CONCURRENT PRESSING AND CONVEYING {5}
145  DF  .~ Helix-type compressor {5}
150.~.~ Helix interengaging abutment

DEFINITION

Classification: 100/150

(under subclass 145) Apparatus in which the material as it is carried forward by the rotating finned member comes against an abutment blocking the space between successive turns of the spiral.