US PATENT SUBCLASS 73 / 187
.~.~ Rotary

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

178 R  DF  NAVIGATION {5}
181  DF  .~ Ship's log {4}
187.~.~ Rotary

DEFINITION

Classification: 73/187

(under subclass 181) Logs wherein a turbine or rotary motor member is rotated by the fluid medium and the number of rotations per unit of time is a measure of the speed of the craft.

SEE OR SEARCH THIS CLASS, SUBCLASS:

185, for rotary drag type logs.

SEE OR SEARCH CLASS

310, Electrical Generator or Motor Structure, subclass 323.21 for a piezoelectric element forming a resonant structure used to measure a physical parameter or condition.