Fluid distribution bar
US4909181A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1988 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Oct 18, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B1/326
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluid distribution bar, such as for applying a liquid or other fluent medium to a tumbling bed of material to be coated, has concentrically mounted inner and outer tubes in the described embodiment. The inner tube has a plurality of outlets along a length of the tube which are alignable with corresponding openings formed in the outer tube by relative movement of the tubes. A plurality of slidable seals each corresponding to an inner tube outlet are mounted in the interior of the outer tube to overlie and seal the inner tube outlets in a first position, with the relative movement of the tubes unsealing the outlets in a second position for fluid distribution. The described embodiment uses seals comprising an elongated flexible resilient sealing strip mounted at each end in apertures formed in the outer tube such that the flexible strips are elastically deformed to slidably bear against the exterior surface of the inner tube for a good sealing engagement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.