Vibratory spiral elevator
US5024320A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 1990 |
| Grant date | Jun 18, 1991 |
| Priority date | — |
| Expiry date | Jun 21, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/162
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A spiral elevator is described for conveying product from one level to another level up a spiral track. The elevator is powered by a two-mass system having an exciter resiliently supported on the vertical tube. The exciter has a pair of parallel shafts with a vibration generating member mounted on each shaft. A motor is provided for driving each shaft independent of the other shaft. Controls are provided for controlling the vibratory forces generated by the vibration generating members to vary the vibratory forces from substantially zero unbalance to a desired level of unbalance to convey product from the inlet to the outlet of the spiral track.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.