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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
NORDYNE INC	8000 PHOENIX PARKWAY O'FALLON MO 63366

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• Non-US Classification not provided for expired patents

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Ali, Rafath	Chesterfield, MO	2	16
# of filed Patents : 2 Total Citations : 16
Bales, David W	Manchester, MO	7	279
# of filed Patents : 7 Total Citations : 279
Vaughn, Thomas D	Ballwin, MO	6	50
# of filed Patents : 6 Total Citations : 50

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent No: 7225671

Fluid-quantity gauging

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Abstract

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An ultrasonic fuel-gauging system has several probes each having a transducer mounted at the lower end of a still well. The transducers are connected to a processor, which measures the height of fuel above the transducers within the still wells. The processor also measures the resonant frequency of each transducer and from this calculates fuel density. The system calculates the mass of fuel in the tank from the density and the volume as calculated from the heights.

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Description

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