US PATENT SUBCLASS 366 / 158.2
.~.~.~.~ Varying diameter screw or shank
Current as of:
June, 1999
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366 /
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AGITATING
150.1
DF
HAVING SPECIFIED FEED MEANS
{16}
154.1
DF
.~ Agitation of material in feeder or supply reservoir {3}
155.1
DF
.~.~ Rotatable impeller {2}
156.1
DF
.~.~.~ Screw conveyor {6}
158.2
.~.~.~.~ Varying diameter screw or shank
DEFINITION
Classification: 366/158.2
Varying diameter screw or shank:
(under subclass 156.1) Subject matter wherein the helical blade varies in diameter along its length or the blade surrounds and is mounted on a central shank that varies in diameter.