Measuring and testing – Liquid level or depth gauge – Float
Patent
1991-12-17
1992-10-20
Yasich, Daniel M.
Measuring and testing
Liquid level or depth gauge
Float
73DIG5, 200 84C, 222DIG1, G01F 2346, G01F 2374
Patent
active
051560488
ABSTRACT:
A fluid level detector comprises a tank including a sleeve portion extending vertically from a bottom section of the tank to a top section of the tank, and sensor device mounted to a circuit board connected at one end to monitoring device, with the circuit board being inserted into the sleeve. There is a circular float assembly with a center aperture. The circular float assembly includes a pair of magnets mounted in push-pull orientation at opposite sides of the aperture within the float assembly. The float assembly is slidably positioned over the sleeve whereby the float assembly moves up and down the sleeve as the water level changes in the tank, wherein the sensor device generate a signal representing detection of fluid level by the sensor device when the fluid level in the tank is substantially at the level of the sensor device.
REFERENCES:
patent: 3976963 (1976-08-01), Kubler
patent: 4361835 (1982-11-01), Nagy
patent: 4466284 (1984-08-01), Dumery
patent: 4647180 (1987-03-01), Watanabe
patent: 4843193 (1989-06-01), Budecker et al.
patent: 4976146 (1990-12-01), Senghaas et al.
patent: 4989754 (1991-02-01), Grasso et al.
DeFigueiredo Carlos L.
Doutney George J.
Malandra, Jr. Charles R.
Pitney Bowes Inc.
Scolnick Melvin J.
Yasich Daniel M.
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