Electricity: circuit makers and breakers – Special application – Turn indicator type switches
Patent
1977-11-07
1979-04-03
Scott, James R.
Electricity: circuit makers and breakers
Special application
Turn indicator type switches
200 6121, H01H 3500
Patent
active
041479068
ABSTRACT:
Apparatus for indicating the level of flowable material in a storage bin comprising a motor rotatably suspended by a spring within a protective enclosure and a drive shaft coupled by a ball-and-detent clutch to a paddle disposed within the bin to engage material therein. When the material reaches the level of the paddle, the drag on the paddle causes the motor to rotate eccentrically within the enclosure and thereby to activate switches disposed within the enclosure radially of the motor housing. A spring returns the motor to the switch-deactivated position when the material level decreases and the consequent drag is removed from the paddle.
REFERENCES:
patent: 2851553 (1958-09-01), Grastick
patent: 3210493 (1965-10-01), Lau
patent: 3210495 (1965-10-01), Lau
patent: 3542982 (1970-11-01), Gruber
patent: 3721971 (1973-03-01), Gruber
patent: 3818159 (1974-06-01), Evans et al.
patent: 3941956 (1976-03-01), Delin et al.
patent: 4095064 (1978-06-01), Fleckenstein
Bindicator Company
Scott James R.
LandOfFree
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