Dispensing – Automatic control – Motor control
Patent
1986-02-18
1987-10-20
Skaggs, H. Grant
Dispensing
Automatic control
Motor control
222638, 137173, 118688, B67D 534, B67D 506
Patent
active
047008709
ABSTRACT:
An apparatus for dispending a fluid free of included air bubbles, such as for example, an adhesive bead, includes sensing devices for detecting the presence of an included air bubble in the conduit leading from a source of the fluid to a discharge of a movable fluid dispenser. The sensing devices are connected to a motor which drives an arm on which the fluid dispenser is mounted. A first sensing device slows movement of the dispenser upon sensing an air bubble in the fluid and a second sensing device stops movement of the dispenser upon sensing an air bubble in the fluid. The movement of the dispenser is restarted after a predetermined time period sufficient to allow the air bubble to pass out of the dispenser discharge. The sensing devices advantageously use a light beam, such as infra-red light or laser, to detect the presence of the included air bubble.
REFERENCES:
patent: 3252441 (1966-05-01), Hargreaves
patent: 3283899 (1966-11-01), Vedvik et al.
patent: 3639728 (1972-02-01), Helfand et al.
patent: 3648694 (1972-03-01), Mogos et al.
patent: 4312341 (1982-01-01), Zissimopoulos et al.
James, Sr. James R.
Schleicher John K.
Accuratio Systems Inc.
Ammeen Edward S.
Skaggs H. Grant
Winger Jon C.
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