US PATENT SUBCLASS 425 / 77
ULTRA HIGH PRESSURE GENERATING DEVICE


Current as of: June, 1999
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425 /   HD   PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS

77ULTRA HIGH PRESSURE GENERATING DEVICE


DEFINITION

Classification: 425/77

(under the class definition) Devices specifically designed to generate pressures of the order of approximately 100,000 psi or greater.

(1) Note. The devices included herein are frequently for use in changing or controlling crystal structure, e.g.., diamond formation, or for testing or studying the chemical or physical effect of ultra high pressures on a test sample of material.

(2) Note. Included herein are press plungers, per se, disclosed for use in ultra high pressure type press.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1, for molding devices utilizing force from explosive or thermic compositions.

78+, for presses for molding powdered metal.

406+, for press molding apparatus in general under the class definition and see notes thereto. SEE OR SEARCH CLASS

73, Measuring and Testing, appropriate subclasses for a laboratory type press combined with means to measure or test the material being pressed.

100, Presses, appropriate subclasses, especially

232, for multiple plunger presses not designed to generate ultra high pressure.

117, Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor, for non-coating apparatus for growing therein-defined single-crystal of all types of materials and by use of all means including by high pressure or with shaping means.

219, Electric Heating,

50, for reaction vessels, per se, and see especially Note 5 of that subclass definition.