Proximity sensor

Details Proximity sensor Proximity sensor

1981-03-20

1983-07-05

Kazenske, E. R.

Measuring and testing

With fluid pressure

Dimension, shape, or size

G01B 1300

Patent

active

043911277

ABSTRACT:
A sensor for detecting a break in a continuously advancing web. A vacuum tube extends through a plenum in a jet body. Air under pressure is introduced into the plenum and discharges through an annular orifice surrounding the tube onto a flared end. A low pressure switch in communication with the tube senses the absence of a web from its normal path of advance adjacent the flared end.

REFERENCES:
patent: 3371517 (1968-03-01), Roth
patent: 3482954 (1969-12-01), Yuen
patent: 3545256 (1970-12-01), Beeken
patent: 3597961 (1971-08-01), Pinkstaff
patent: 3709035 (1973-01-01), De Fries et al.
patent: 3881357 (1975-05-01), Sahlin
patent: 3894552 (1975-07-01), Bowditch
patent: 3942556 (1976-03-01), Wojcikowski

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