US PATENT SUBCLASS 137 / 404
.~.~ In sinking or bucket type float


Current as of: June, 1999
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137 /   HD   FLUID HANDLING

386  DF  LIQUID LEVEL RESPONSIVE OR MAINTAINING SYSTEMS {11}
403  DF  .~ By weight of accumulated fluid {4}
404.~.~ In sinking or bucket type float


DEFINITION

Classification: 137/404

(under subclass 403) Apparatus in which the liquid level is sensed by an open or bucket type element which floats on the liquid accumulation when empty and subsequently is filled with the liquid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

129, for plural siphons with the main siphon operated by a sinking or bucket type float.

163, for gas pressure discharge of liquid feed traps with the gas pressure controlled by sinking or bucket type float.

185, for an inverted bucket or gas collecting float controlling a discriminating outlet for liquid in a diverse fluid containing pressure system.

190+, for fluid separating traps with discriminating outlets with fluid responsive valve with sinking or bucket type float control.

401, for tank outflow control comprising supplemental or safety closing bias or means and a sinking float.