US PATENT SUBCLASS 291 / 11.1
.~ Including sand trap

Current as of: June, 1999
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291 /   HD   TRACK SANDERS

3  DF  FLUID DELIVERY {7}
11.1.~ Including sand trap {2}
11.2  DF  .~.~> Multiple fluid inlets for delivery pipe
11.3  DF  .~.~> Specified means to alter inlet fluid flow

DEFINITION

Classification: 291/11.1

Including sand trap:

(under subclass 3) Service comprising a retaining obstruction or horizontal passage to which the sand is delivered for engagement thereat by the air, steam, water, engine exhaust gas or other fluid. The fluid moves the sand over the obstruction or along the passage into the delivery pipe.