Apparatus for determining the quantity of particles present in a

Details Apparatus for determining the quantity of particles present in a Apparatus for determining the quantity of particles present in a

1979-06-18

1981-07-07

Scott, James R.

Electricity: circuit makers and breakers

Special application

Container contents level responsive

200 617, H01H 3500

Patent

active

042776570

ABSTRACT:
Apparatus is disclosed for determining the quantity of particles present in a container. A sensor device is movably mounted in the container and is in contact with the particles. When the filling height in the container falls below a predetermined value, an electrical switch is actuated and emits a signal to an indicator. The sensor device comprises a flap fixed on an axle rotatably mounted in the container. A resilient element presses the flap against the quantity of particles and a cam is mounted on the axle. On rotation of the axle, the cam actuates the electrical switch.

REFERENCES:
patent: 2915205 (1959-12-01), Strader
patent: 3044272 (1962-07-01), Eisendrath
patent: 3393280 (1968-07-01), Skelton et al.
patent: 3443437 (1969-05-01), Skalka
patent: 3896279 (1975-07-01), Sugawara
W. D. Freeman et al., IBM Tech. Disc. Bull.; "Toner Reservoir Level Detector System", vol. 13, No. 11, Apr. 1971, p. 3217.

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