Chain conveyor with slack removal apparatus
US6695130B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2003 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Jan 22, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G2201/0282
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A chain conveyor having an idler shaft mounted to a carriage which is mounted to a frame for sliding motion along the direction of a chain conveyor bed. Hydraulic cylinders extend between the frame and the carriage and are constantly supplied with hydraulic oil at relatively low pressure such as can be developed with ordinary shop air pressure applied to an air-oil tank The hydraulic lines supplying fluid to the hydraulic cylinders have check valves which only allow hydraulic fluid into the cylinders, thus allowing the cylinders only to move the carriage on which the idler shaft is mounted away from the drive shaft. When the chain conveyor is momentarily reversed, the entire loaded weight of the conveyor is now applied to the idler shaft, however, the check valves prevent hydraulic fluid from leaving the hydraulic cylinders, thus preventing any motion of the carriage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.