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US 3,945,251 AGranted
Trichel pulse corona gas velocity instrument
AssigneeStanford Research Institute
InventorEdward T. Pierce
Life of this patent
Estimating the term…
Abstract
Velocity of a gas (e.g., wind) is determined as a function of the pulse repetition frequency of corona discharge (Trichel) pulses from a discharge probe positioned in the gas stream.
Claims2
The method of determining variations is the velocity of a gas, which method includes applying an uninterrupted unidirectional negative potential to a point electrode, thereby generating a continuing series of ionization pulse discharges;
- subjecting the said pulse discharges to the flow of gas, thus determining the frequency of repetition of the said pulse discharges in accordance with the velocity of said gas and variations in the frequency of the said pulse discharges in accordance with variations in the velocity of the said gas;
- and determining the variations in the pulse repetition frequency rate, thereby to determine variations in the velocity of the gas.
Dependencies are inferred from the claim text.