System for detecting missing vent tubes on a bottle filling appa

Details System for detecting missing vent tubes on a bottle filling appa System for detecting missing vent tubes on a bottle filling appa

1996-07-12

1997-12-16

Recla, Henry J.

Fluent material handling, with receiver or receiver coacting mea

With signal, indicator, recorder, inspection means or exhibitor

141144, 141192, B65B 104

Patent

active

056974060

ABSTRACT:
An apparatus for detecting the absence of a metal vent tube from a bottle filling machine comprises a nozzle that produces a stream of electrically conductive liquid which strikes the vent tube. A solenoid valve controls the flow of liquid to the nozzle and is activated by a control signal from the controller of the bottle filling machine. The apparatus also includes a generator which produces a signatured signal that is applied to the nozzle. A detector circuit has an input coupled to the frame of the bottle filling machine for detecting whether the signatured signal is present in the frame due to conduction from the vent tube. The detector responds to a failure to detect the signatured signal at the input by producing an output signal which indicates the absence of the vent tube. The controller responds to the detector output signal by shutting down the bottle filling machine until corrective action is taken.

REFERENCES:
patent: 2322228 (1943-06-01), De Staebler
patent: 4530384 (1985-07-01), Boyes
patent: 4787428 (1988-11-01), Bacroix et al.
patent: 5228486 (1993-07-01), Henninger

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