US PATENT SUBCLASS 55 / 304
.~.~ Filter manipulation, shaking or flexing for precluding or removing encrustation

Current as of: June, 1999
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55 /   HD   GAS SEPARATION

282  DF  WITH NONLIQUID CLEANING MEANS FOR SEPARATING MEDIA {13}
301  DF  .~ Cohesive filter media cleaning {2}
304.~.~ Filter manipulation, shaking or flexing for precluding or removing encrustation {1}
305  DF  .~.~.~> Attendant actuated manipulating means

DEFINITION

Classification: 55/304

(under subclass 301) Apparatus comprising means effecting or enabling filter motion or a relative movement among portions thereof whereby accumulations are removed or prevented.