Underdrain assembly with pivotally-mounted and lockable laterals
US5068033A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1990 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | May 10, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D24/4876
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An underdrain assembly contained within a swimming pool filter has a plurality of laterals, each of which is pivotable between a non-operating position and an operating position. Each of the laterals is threadedly attached to the underdrain assembly so that they can be replaced individually by unscrewing them from the underdrain assembly without removing the underdrain assembly from the filter. The laterals can be locked in their operating positions by either a reversible locking mechanism or an irreversible locking mechanism. With the laterals in their non-operating positions, the underdrain assembly and the laterals can be inserted into the filter as a unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.