US PATENT SUBCLASS 137 / 142
.~ With flow starting, stopping or maintaining means

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

123  DF  SIPHONS {8}
142.~ With flow starting, stopping or maintaining means {7}
143  DF  .~.~> Siphon venting or breaking
144  DF  .~.~> With leakage or entrained air removal
145  DF  .~.~> Pressure applied to liquid in supply chamber
146  DF  .~.~> Plunge or immersion starting
147  DF  .~.~> Pump or liquid displacement device for flow passage {2}
150.5  DF  .~.~> Siphon inlet movable to and from seat
151  DF  .~.~> With valve or closure in-flow passage

DEFINITION

Classification: 137/142

(under subclass 123) Apparatus having means for applying pressure to initiate, stop or maintain liquid flow, to vent air for starting, stopping or maintaining siphon flow, or for controlling the flow by opening, closing or variably restricting the main flow path of the siphon.

SEE OR SEARCH THIS CLASS, SUBCLASS:

128+, for siphons with auxiliary starting siphon.

130+, for siphon discharge controlled by the receiver.

132+, for periodic discharging or level responsive siphons.

SEE OR SEARCH CLASS

222, Dispensing, 204, for dispenser siphons with auxiliary starting means and subclass 416 for dispenser siphons.