US PATENT SUBCLASS 374 / 4
LEAK OR FLAW DETECTION

Current as of: June, 1999
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374 /   HD   THERMAL MEASURING AND TESTING

4LEAK OR FLAW DETECTION {1}
5  DF  .~> With heating or cooling of specimen for test

DEFINITION

Classification: 374/4

LEAK OR FLAW DETECTION:

(under the class definition) Subject matter for testing a solid material for a defect or undesired passage of fluent material therethrough.

SEE OR SEARCH THIS CLASS, SUBCLASS:

57, for detection of susceptibility to such a defect caused by a thermal effect.

SEE OR SEARCH CLASS

73, Measuring and Testing,

40+, for leakage testing by fluid pressure; and subclasses 104+ for surface or cutting edge testing, in general.

228, Metal Fusion Bonding,

103, for similar subject matter in a welding process.