Rotating paddle bin level indicator
US4695685A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1986 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Jul 28, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H35/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Apparatus for indicating the level of flowable material in a storage bin comprising a motor mounted within a protective enclosure and coupled by a shaft to a paddle disposed within the bin to engage material contained therein. When the material reaches the level of the paddle, drag on the paddle causes the motor to rotate within the enclosure and thereby to activate switches disposed within the enclosure for indicating material level. A spring is mounted between the enclosure and the motor such that the spring urges the motor to both the switch-activating and the switch-deactivating positions in turn, and must be urged over center to permit motion of the motor in either direction between such positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.