US PATENT SUBCLASS 417 / 156
.~.~.~ With spark arrester

Current as of: June, 1999
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417 /   HD   PUMPS

65  DF  ONE FLUID PUMPED BY CONTACT OR ENTRAINMENT WITH ANOTHER {10}
151  DF  .~ Jet {23}
155  DF  .~.~ Flue type {2}
156.~.~.~ With spark arrester

DEFINITION

Classification: 417/156

(under subclass 155) Apparatus in which the pumped fluid contains sparks or cinders and means are provided to separate out or reduce the size of the sparks or cinders prior to discharge from the pump.

SEE OR SEARCH CLASS

96, Gas Separation: Apparatus, appropriate subclasses, for spark arresters, per se. When a spark arrester is combined with a jet pump it is considered to be a perfecting feature of the pump and is classified in Class 417.