Method of releasing a stuck air value and sticking release appar

Details Method of releasing a stuck air value and sticking release appar Method of releasing a stuck air value and sticking release appar

1996-11-01

1998-06-23

Hofsass, Jeffery A.

Communications: electrical

Condition responsive indicating system

With particular system function

7386253, G08B 2300

Patent

active

057710007

ABSTRACT:
The present invention provides a method of releasing a stuck air valve and also a sticking release apparatus that detects sticking of the air valve from a discrepancy in the waveform of an excitation current of a DC solenoid, then uses that current to release the sticking of the air valve. If sticking of the air valve is detected from the excitation current of the DC solenoid, a sticking release current flows either a predetermined number of times or for a predetermined period of time from a sticking release current supply portion of a current supply means, to release the sticking.

REFERENCES:
patent: 3942373 (1976-03-01), Rogers
patent: 3994163 (1976-11-01), Rogers

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