Adjustable ballast system for the holddown belt in a double facer
US5466329A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1994 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Jun 3, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1025
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A variable load ballast system for the double facer of a corrugator includes a number of rows of holddown belt engaging ballast members positioned in side-by-side relation transversely across the belt, with the rows extending over the full heating section of the double facer. Each of the rows is divided into a number of longitudinal segments, each of which segments is controlled by a vertical actuator to move the segment between a lower full load ballast position on the belt and an upper no load position off the belt. The rows may comprise a series of ballast rollers or a continuous flexible membrane and either embodiment provides the ability to vary the ballast load on the holddown belt longitudinally, laterally and in any pattern of symmetry or asymmetry to accommodate a wide range of operating conditions and problems typically arising in the operation of a double facer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.