US PATENT SUBCLASS 264 / 442
.~ Using sonic, supersonic, or ultrasonic energy

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

405  DF  DIRECT APPLICATION OF ELECTRICAL OR WAVE ENERGY TO WORK (E.G., ELECTROMAGNETIC WAVE, PARTICULATE, MAGNETIC, INDUCTION HEAT, SONIC, ELECTROSTATIC ENERGY, ETC.) {26}
442.~ Using sonic, supersonic, or ultrasonic energy {1}
443  DF  .~.~> Simultaneously with molding {2}

DEFINITION

Classification: 264/442

Using sonic, supersonic, or ultrasonic energy:

(under subclass 405) Processes directed to utilizing wave vibrations which cover the use of (a) frequencies above the range of normal human hearing, usually above 20,000 hertz and below radio waves (i.e., supersonic or ultrasonic), or (b) frequencies which can be heard by the human ear (from about 15 hertz to approximately 20,000 hertz).

SEE OR SEARCH THIS CLASS, SUBCLASS:

69, for processes involving treatment of material by vibrating, jarring, or agitating during shaping and wherein the frequency is not specified.