US PATENT SUBCLASS 181 / 230
.~.~ Pneumatic type motor (e.g., air hammer, etc.)


Current as of: June, 1999
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181 /   HD   ACOUSTICS

175  DF  SOUND-MODIFYING MEANS {12}
212  DF  .~ Muffler, fluid conducting type {25}
230.~.~ Pneumatic type motor (e.g., air hammer, etc.)


DEFINITION

Classification: 181/230

Pneumatic type motor (e.g., air hammer, etc.):

(under subclass 212) Subject matter wherein the fluid conducting attenuating device is mounted on the exhaust end of a compressed air or vacuum actuated motor (i.e., air hammer, tool, etc.).

(1) Note. Structure claimed in combination with the silencer and which goes beyond the scope of the class is classified with the art device. For example, the combination of an impact tool plus a muffler for the tool is classified with the impact tool.

SEE OR SEARCH CLASS

173, Tool Driving or Impacting, appropriate subclasses for pneumatic tools, and specifically Digest 2 for sound muffling.

415, Rotary Kinetic Fluid Motors or Pumps,

119, for sound or vibratory wave absorbing or preventing means.