Measuring and testing – Liquid level or depth gauge – Float
Patent
1984-10-10
1987-01-20
Frankfort, Charles
Measuring and testing
Liquid level or depth gauge
Float
73301, 73304R, 73308, 73313, 733225, 340624, G01F 2368, G01F 2376
Patent
active
046372547
ABSTRACT:
This invention pertains to gauge apparatus for measuring liquid levels comprising an elongated electrical sensor adapted to be arranged in upright position while immersed so constructed as to have an electrical resistance which may be varied. A spherical float is magnetically attracted to the sensor for rolling movement with respect thereto for varying the resistance in response to variation in elevation of float caused by changes in the level of the liquid. The resistance is measured thereby to provide an indication of such level. The magnetic attraction holds the float and sensor in operative engagement at all times including those during which the float changes height in response to changes in the level of the liquid being measured. The presence of different liquid is also detected in a given vessel, such as gasoline and water, and an indication and alarm of vessel overfill during a filling operation is provided.
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Dyben Jerry F.
Wulc Stanley S.
Frankfort Charles
Jeffers Albert L.
Niewyk Anthony
Tokheim Corporation
Will Thomas B.
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