US PATENT SUBCLASS 55 / 310
.~ Pressure relief means to or from atmosphere

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

309  DF  WITH SEPARATING MEDIA BYPASS OR SYSTEM GAS PRESSURE RELIEF (E.G., RUPTURABLE OR DEFORMABLE) {3}
310.~ Pressure relief means to or from atmosphere {1}
311  DF  .~.~> Relief means is downstream of media (e.g., ambient air bypasses filter)

DEFINITION

Classification: 55/310

(under subclass 309) Apparatus having means responsive to super or sub-atmospheric pressures within the apparatus either to discharge system fluid therefrom to the surrounding atmosphere or to permit inflow of air from the surrounding atmosphere through other than the normal system fluid inlet.

SEE OR SEARCH CLASS

96, Gas Separation: Apparatus,

400+, for gas separation apparatus having gas pressure responsive means for gas cutoff or diversion.