Vibratory conveyors
US6155404A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1999 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Jun 18, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G27/30
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A two-way drive for horizontally vibrating a feeder bed, including a reversible drive rotating one of two drive shafts rotatably connected so that the second drive shaft rotates at a speed which is a selected ratio (at least 2:1) of the speed of rotation of the first. A first eccentric weight is rotatably secured to the first drive shaft. A second eccentric weight is rotatably secured to the second drive shaft and movable between a first position on a first shaft radius when the second shaft is driven in one direction and a second position on a second shaft radius when the second shaft is driven in the reverse direction. The first and second shaft radii are spaced from each other so that the second eccentric weight in the first position is aligned with the first eccentric weight in one concurrent rotational position on one side of the drive shafts to provide a maximum force in one horizontal direction when driven in the one direction, and the second eccentric weight in the second position is aligned with the first eccentric weight in an opposite concurrent rotational position on the opposite side of the drive shafts to provide a maximum force in an opposite horizontal direction whe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.