Method and apparatus for moving bulk material through a chute
US4972970A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1989 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Jan 11, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G65/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Bulk material that is difficult to feed, such as glass fibers, is fed from a storage bin into a feeding chute driven by a vibratory drive which vibrates the chute in a longitudinal direction of the chute, that is, in the feed advance direction of the chute. The chute may be a so-called loss-in-weight feeding chute. In order to assure a uniform, constant material flow without any bunching and without any gaps in the flow for an accurate feeding, the material flow is exposed or influenced by a further vibration effective in a direction substantially across the feed advance direction. For the purpose a vibrator with vibrating elements extending in the feed advance direction vibrates in the cross-direction. These vibrating elements are so located that they can make the material flow through the chute more uniform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.