Wind chill factor indicator
Assigneeby said Cecil L. Moore SAID Ronald J. Mulvaney
InventorsRonald J. Mulvaney, Cecil L. Moore
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Abstract
Disclosed is an pitot-static tube whose sensed pressure is converted to a variable resistor setting, the resistor being series connected to a thermistor adapted to respond to outdoor temperature. A D.C. voltage is impressed across these elements in series with the coil of an indicating meter which is calibrated to indicate the wind chill factor or index determined by the temperature and wind magnitude sensed by the thermistor and pitot-static tube, respectively.
Claims5
A wind chill factor indicator comprising a pitot-static tube mounted out-of-doors for swivel movement and having a vane adapted to face the open end of the tube into the wind, a variable resistor having a wiper arm mounted adjacent the total pressure connection end of the tube, a transducer connected between the pressure connection end of said tube and said wiper arm for converting the pressure in said tube into motion of said wiper arm, a thermistor mounted to be responsive to outdoor ambient temperature, an indicating meter having a coil adapted to induce movement of an indicating needle proportional to electrical current flow through the coil, a source of electrical power, and wiring means connecting said resistor, thermistor, meter coil and source of power, whereby the current flow through said meter coil, and hence the position of said indicating needle, is a function of both the wind velocity and temperature sensed by said tube and thermistor.
A wind chill factor indicator comprising a directionally controlled total wind pressure magnitude sensing element, a variable resistor, a transducer for transforming the total wind pressure sensed by said element into an electrical resistance, said transducer including a bourdon tube pneumatically connected to said sensing element, linkage means actuated by said bourdon tube for determining the electrical resistance of said variable resistor, a thermistor exposed to outdoor temperature, an electrical circuit connecting said variable resistor and said thermistor in series across a power source and a remotely located indicating meter responsive to the variation of the current flow in said circuit for providing a continuous readout of the wind chill factor.
Dependencies are inferred from the claim text.