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US 6,779,398 B2Granted
Ullage meter for a tank of compressed gas at elevated temperature
OwnerWalter Benjamin Payneinventor
Life of this patent
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Abstract
A method of gas tank ullage indication is designed to be made up of a coating or film attached to the surface of a tank for holding compressed gas. This is used normally when the tank is warm as is the case right after the tank is pressured with gas. The coating includes materials which change in appearance when various specific temperatures are reached. The changed appearance allows indications to be seen that tell the observer how the pressure will change after the tank has equilibrated to some specific temperature.
Claims7
A method of gas tank ullage determination using temperature sensitive pigments, comprising,
- said temperature-sensitive pigments within color changing coatings applied to the outer surface of the wall of a gas storage tank, said coatings when changing color allowing indications imprinted within said coatings to be read, said indications defining for a given future temperature the change in pressure of gas stored within the tank as determined by design calculations using the physical principles of the common gas laws.
Dependencies are inferred from the claim text.