US PATENT SUBCLASS 164 / 61
.~.~ Utilizing a vacuum

Current as of: June, 1999
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164 /   HD   METAL FOUNDING

1  DF  PROCESS {6}
47  DF  .~ Shaping liquid metal against a forming surface {26}
61.~.~ Utilizing a vacuum {3}
62  DF  .~.~.~> Applying diverse pressure
63  DF  .~.~.~> To transport casting material to mold (e.g., vacuum forming, etc.)
65  DF  .~.~.~> During introduction to metal

DEFINITION

Classification: 164/61

(under subclass 47) Process directed to exhausting or partially exhausting air or other gases from the environment of the casting material, before, during or after casting by applying a pressure differential directly to the material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

7.1, for processes of applying a vacuum in a mold forming operation.

SEE OR SEARCH CLASS

75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, appropriate subclasses for vacuum treatment of metals.

264, Plastic and Nonmetallic Article Shaping or Treating: Processes,

500+, for processes of vacuum forming plastic materials, and subclasses 101+ for processes of vacuum treating work.