Corrugating apparatus and process
US4252591A · kind A · utility
44Cited by
6References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 1979 |
| Grant date | Feb 24, 1981 |
| Priority date | — |
| Expiry date | May 2, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1038
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process and apparatus are provided for forming corrugated filter sheet by folding a long strip of sheet material into corrugations extending longitudinally of the strip, press-bending the sheet along the longitudinal fold lines of the intended corrugations; and gradually drawing in the sheet from the sides towards the center, while pushing the sheet out from each side along the fold lines, so as to form the intended corrugations, reducing the width of the sheet according to the height and width of the corrugations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.