Patent classifications
G
PHYSICS
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G01
MEASURING; TESTING
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G01P
MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
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5/00
Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
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G01P5/24
by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
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G01P5/245
by measuring transit time of acoustical waves
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G01P5/247
Sing-around-systems
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