US PATENT SUBCLASS 366 / 160.4
.~.~.~.~ Piston pump

Current as of: June, 1999
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366 /   HD   AGITATING

150.1  DF  HAVING SPECIFIED FEED MEANS {16}
160.1  DF  .~ Adjustable mixing ratio control {2}
160.2  DF  .~.~ Including pump {1}
160.3  DF  .~.~.~ By variable pump {1}
160.4.~.~.~.~ Piston pump

DEFINITION

Classification: 366/160.4

Piston pump:

(under subclass 160.3) Subject matter wherein the pump utilizes a piston to force material out of a housing.

SEE OR SEARCH THIS CLASS, SUBCLASS:

176.3, for a mixing apparatus comprising a piston pump forcing material through a restriction.