Electronic level

Details Electronic level Electronic level

1985-11-19

1987-04-07

Little, Willis

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33379, G01C 906

Patent

active

046549773

ABSTRACT:
An electronic level having a horizontal and/or a vertical transducer, each of which exhibits an effective impedance that is a function of the deviation of that transducer from a reference plane. Preferably, each transducer is an electrolytic transducer formed of a container partially filled with electrolytic liquid. Depending upon the general horizontal or vertical orientation of the level, one or the other transducer is connected to a drive signal generating circuit which supplies an output drive signal of a magnitude that is a function of the impedance of that transducer. This output drive signal is applied to a display driver which, in turn, drives an array of visual indicators in accordance with the output signal magnitude.

REFERENCES:
patent: 3786472 (1974-01-01), Scopacasa
patent: 4079521 (1978-03-01), Uhorczak
patent: 4121347 (1978-10-01), Thele
patent: 4152839 (1979-05-01), McDonald
patent: 4506450 (1985-03-01), Fleming et al.

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