US PATENT SUBCLASS 169 / 73
.~.~.~ By collapsing chamber holding agent

Current as of: June, 1999
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169 /   HD   FIRE EXTINGUISHERS

30  DF  PORTABLE VESSELS {5}
71  DF  .~ Gas pressure {9}
72  DF  .~.~ With means facilitating total discharge {1}
73.~.~.~ By collapsing chamber holding agent

DEFINITION

Classification: 169/73

(under subclass 72) Apparatus, having variable volume means provided to store agent within said container whereby the volumetric capacity of the variable volume means may be reduced substantially to zero and thus insure discharge of the agent in its entirety.

(1) Note. The variable volume means may be a cylinder with a piston movable therein or a collapsible wall chamber.