US PATENT SUBCLASS 73 / 40.5 A
.~.~.~ Using acoustic detectors


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

37  DF  WITH FLUID PRESSURE {8}
40  DF  .~ Leakage {8}
40.5 R  DF  .~.~ Fluid handling conduit in situ {1}
40.5 A.~.~.~ Using acoustic detectors

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 73/40.5

(under subclass 40) Subject matter for testing fluid operative systems or fluid handling conduits while in their operative assembly or position.

SEE OR SEARCH CLASS

48, Gas: Heating and Illuminating,

193, for means associated with a gas main to detect or indicate leaks without positive means to create a condition whereby leakage is produced in a defective pipe or joint; and subclass 195 for the preparation of odorous material and/or the insertion thereof into a gas main.

166, Wells,

179, and the subclasses here noted for packer or plug devices in wells which are inherently capable of use as fluid pressure leakage testers.