Liquid level sensing apparatus

Details Liquid level sensing apparatus Liquid level sensing apparatus

2006-02-07

2006-02-07

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

Float

C073S314000

Reexamination Certificate

active

06993968

ABSTRACT:
In a liquid level sensing apparatus, a rotating part is fixed with an arm. The arm is arranged to rotate in accordance with a liquid level. The rotating part is supported rotatably on a bearing portion of a housing. A magnet is housed in the rotating part. A magnetoelectric transducer element fixed to the housing is arranged to perform a magnetic detection to convert an intensity of a magnetic field produced by the magnet to an electric signal. The rotating part is formed with an exposure hole exposing a surface of the magnet. The exposed surface of the magnet is located out of a magnetic circuit subjected to the magnetic detection of the magnetoelectric transducer element.

REFERENCES:
patent: 625980 (1899-05-01), Murphy
patent: 6915690 (2005-07-01), Okada et al.
patent: 1 450 142 (2004-08-01), None
patent: 2002-206959 (2002-07-01), None

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