US PATENT SUBCLASS 181 / 269
.~.~.~ Expansion chamber type

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


181 /   HD   ACOUSTICS

175  DF  SOUND-MODIFYING MEANS {12}
212  DF  .~ Muffler, fluid conducting type {25}
264  DF  .~.~ With baffle or baffle structure {9}
269.~.~.~ Expansion chamber type {6}
270  DF  .~.~.~.~> With alternating partial baffles along the length of casing
271  DF  .~.~.~.~> With adjustable or flexible wall
272  DF  .~.~.~.~> Plural chambers
273  DF  .~.~.~.~> And side branch chamber
274  DF  .~.~.~.~> With centrifugal flow
275  DF  .~.~.~.~> And multi-passage

DEFINITION

Classification: 181/269

Expansion chamber type:

(under subclass 264) Subject matter having an enlarged chamber intermediate the length of the fluid passage.