Automatic level sensing system

Details Automatic level sensing system Automatic level sensing system

1984-07-19

1986-02-25

Bell, Jr., Houston S.

Fluent material handling, with receiver or receiver coacting mea

With signal, indicator, recorder, inspection means or exhibitor

Level or pressure in receiver

73293, 367908, B65B 304

Patent

active

045722536

ABSTRACT:
A level sensing system including ultrasonic sound wave transducer means for emitting ultrasonic sound waves and for receiving ultrasonic sound waves reflected from a receptacle whose content level is to be sensed; a content level detector, responsive to the reflected ultrasonic sound waves, for determining the level of the contents of the receptacle; a rim detector, responsive to the reflected ultrasonic sound waves, for determining the location of the rim of the receptacle; and a level comparator, responsive to the rim detector and the content level detector, for comparing the content level with the rim location for indicating when the content level and the rim location are a predetermined distance apart.

REFERENCES:
patent: 4202387 (1980-05-01), Upton
patent: 4440200 (1984-04-01), De Vale et al.

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