US PATENT SUBCLASS 60 / 534
.~.~ Having signal, indicator or recorder of apparatus condition

Current as of: June, 1999
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60 /   HD   POWER PLANTS

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
533  DF  .~ Pulsator {25}
534.~.~ Having signal, indicator or recorder of apparatus condition {1}
535  DF  .~.~.~> Responsive to leakage of pulse fluid

DEFINITION

Classification: 60/534

(under subclass 533) Apparatus including (1) as indicating, registering, signalling or claim means for conveying information about a condition of the apparatus or (2) means that permits an inspection of normally hidden parts or operating fluid of the apparatus.

SEE OR SEARCH CLASS

116, Signals and Indicators,

227, for a nonelectrical liquid level indicator of general utility.

200, Electricity: Circuit Makers and Breakers,

82, for a fluid pressure switch actuated by a piston.

340, Communications: Electrical, 450+, 451+ for an electrical system indicating the condition of a fluid.