Corrugated filter element with external spiral tape support
US4402830A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1982 |
| Grant date | Sep 6, 1983 |
| Priority date | — |
| Expiry date | Jan 13, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/0407
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A corrugated cylindrical filter element is provided having an external spiral tape support, comprising a corrugated filter sheet material in the form of a cylinder having an end cap at each end of the cylinder sealingly bonded to the filter sheet material at that end, the corrugations of the filter sheet material having a tendency to become distorted and displaced with respect to each other under the conditions to which the material is subjected in use, and a relatively narrow strip to continuous high-modulus fiber-reinforced synthetic plastic tape spirally wound around the cylinder, spanning the corrugations and extending between each end and bonded to the end cap and to the tips of the corrugations in a manner to prevent distortion and displacement thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.