Radiation attenuation weighing system for a vertical material feeder
US4238956A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1978 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Aug 21, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G11/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A weighing apparatus for a vertical material feeder which feeds particulate material from a storage bin through a prefeeder agitator and a feeder bowl to an outlet pipe. The weighing apparatus includes a radiation source and detection means positioned on opposite sides of the path of travel of the material through the feeder bowl for generating a signal representing the mass of material in the path. The weighing apparatus also includes a speed sensor for generating a signal representing the speed of the material through the feeder bowl and means responsive to the mass signal and the speed signal for generating a signal representing the rate at which the material is being fed through the feeder bowl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.