Scraper blade assembly
US5865997A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Apr 16, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D33/466
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A scraper blade assembly utilizes an over-center spring to bias the scraper blade assembly both into engagement and out of engagement with a conveyor, such as a moving belt, on a device for separating solids from liquids. The over-center spring extends between a fixed attachment point on the device and a pivoting attachment point on a handle secured to the scraper blade assembly. The invention is particularly applicable to belt filter presses and gravity belt sludge thickeners. An over-center spring may be secured to both ends of the scraper blade assembly to minimize torsional deformation of the scraper blade by the material being separated from the moving belt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.