US PATENT SUBCLASS 73 / 275
.~.~ Antireversing mechanism

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

861  DF  VOLUME OR RATE OF FLOW {23}
272 R  DF  .~ Element {7}
275.~.~ Antireversing mechanism {1}
276  DF  .~.~.~> Check valve

DEFINITION

Classification: 73/275

(under subclass 272) Elements comprising devices which cooperate with the meter to prevent reversing or running backward of the registering mechanism. This subclass includes devices to protect the meter against breakage caused by reversing as well as to prevent fraud.