US PATENT SUBCLASS 73 / 40
.~ Leakage

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

37  DF  WITH FLUID PRESSURE {8}
40.~ Leakage {8}
40.5 R  DF  .~.~> Fluid handling conduit in situ {1}
40.7  DF  .~.~> By probe gas, vapor, or powder
41  DF  .~.~> Conveyor feed {2}
45.5  DF  .~.~> With immersion {2}
46  DF  .~.~> Between fitted parts (e.g., joints) {2}
49  DF  .~.~> Pneumatic tire
49.1  DF  .~.~> Pipe
49.2  DF  .~.~> Receptacle {1}

DEFINITION

Classification: 73/40

(under subclass 37) Subject matter for testing or determining leakage of a specimen or body.

(1) Note. The combination of means for testing specimens with means to reject those specimens which fail to pass the test is in Class 209, Classifying, Separating, and Assorting Solids, subclasses 509+ except where the test is a leakage test.

SEE OR SEARCH CLASS

48, Gas: Heating and Illuminating,

193+, for detecting and preventing leakage from gas mains.

138, Pipes and Tubular Conduits,

90, for closure plugs useful in connection with leakage tests of pipes. 209, Classifying, Separating, and Assorting Solids, see Note 1.

374, Thermal Measuring and Testing,

4+, for leakage testing by measuring thermal parameters.