Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL219911ApublicationCriticalpatent/NL219911A/xx
G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
G01P13/00—Indicating or recording presence, absence, or direction, of movement
G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
G01P13/004—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using the rotation of vanes
F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
F16L2101/00—Uses or applications of pigs or moles
F16L2101/30—Inspecting, measuring or testing
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
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Measuring Volume Flow
(AREA)
Indication Of The Valve Opening Or Closing Status
(AREA)
Indicating Or Recording The Presence, Absence, Or Direction Of Movement
(AREA)