Research/Patents/US 5550474
US 5550474

BATTERY ELECTROLYTE-LEVEL AND ELECTROLYTE-STRATIFICATION SENSING SYSTEM

Assignee

Filed

May 3, 1985

Granted

Aug 27, 1996

Location

VENTURA CA US

Abstract

The device uses a sensor probe in which a plurality of electrolyte level sensor coils and/or specific gravity stratification indicators are stacked vertically in the walls of a hollow electrically insulating and chemically nonreactive elongated probe housing such that the sensor coils never come into contact with the electrolyte. Balanced transformers or series resonant coils are used to sense changes in electrolyte level and/or changes in specific gravity at various respective levels to indicate stratification of electrolyte. The fields of the sensors are changed by the amount of electrolyte in the area of the sensor coils. These changes operate to produce signals that are read as digital or analog outputs.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Jan 10, 1986

Rescinded

Mar 28, 1996

Duration

10 years, 2 months

Inventor

  • 1ERNEST A. DAHL

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records