Method and system for detecting blockage in a spray gun of a liq

Details Method and system for detecting blockage in a spray gun of a liq Method and system for detecting blockage in a spray gun of a liq

1993-08-23

1994-05-31

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

With signals, indicators, recorders, meters or changeable...

73 37, 137557, B67D 508

Patent

active

053162170

ABSTRACT:
A method and system are provided for detecting blockage in a spray gun of a liquid spray system wherein a first transducer is positioned to detect the pressure of paint or sealer in a supply line at an upstream position and a second transducer is positioned immediately adjacent and upstream a spray orifice of a spray gun to detect a second pressure of the liquid wherein a pressure drop of the liquid is calculated and a blockage signal is generated when the pressure drop is less than a predetermined amount. Preferably, the line and the spray gun are sized so that pressure drop is at least 10 psi and preferably approximately 350 psi in the absence of any blockage.

REFERENCES:
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patent: 3385522 (1968-05-01), Kock
patent: 3482781 (1969-12-01), Sharpe
patent: 3665959 (1972-05-01), Castillon
patent: 4181017 (1980-01-01), Markle
patent: 4368852 (1983-01-01), Sharp et al.
patent: 4436886 (1984-02-01), Rood
patent: 4662798 (1987-05-01), Fassbinder
patent: 4668948 (1987-05-01), Merkel
patent: 4712736 (1987-12-01), Bray et al.
patent: 5096120 (1992-03-01), Luckarz

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