US PATENT SUBCLASS 137 / 225
.~.~ Diaphragm, bellows or expansible tube

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

223  DF  INFLATABLE ARTICLE (E.G., TIRE FILLING CHUCK AND/OR STEM) {6}
224  DF  .~ With pressure-responsive pressure-control means {3}
225.~.~ Diaphragm, bellows or expansible tube

DEFINITION

Classification: 137/225

(under subclass 224) Apparatus having a diaphragm, bellows or expansible tube as the pressure responsive means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

510, for relief valves of general utility closing in the direction of fluid flow and having a reactor surface comprising flexible diaphragm or bellows.

777+, for expansible chamber devices, per se, and see the notes to subclass 777.

793+, for diaphragms and bellows, per se, and see the notes to subclass 793.