US PATENT SUBCLASS 73 / 861.74
.~.~ On a vane

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

861  DF  VOLUME OR RATE OF FLOW {23}
861.71  DF  .~ By measuring thrust or drag forces {3}
861.74.~.~ On a vane {1}
861.75  DF  .~.~.~> With rotation about a fixed axis {1}

DEFINITION

Classification: 73/861.74

On a vane:

(under subclass 861.71) Subject matter wherein the object is a vane or pivoted flap valve and movement of the vane or flap valve is measured.

SEE OR SEARCH THIS CLASS, SUBCLASS:

170.05+, for vane meters combined with wind vanes.

186, for vane meters combined with ships log.