Support tube, filter element and filter system having a support tube and method and device for producing the support tube
US10150072B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2016 |
| Grant date | Dec 11, 2018 |
| Priority date | — |
| Expiry date | Jan 29, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/0207
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A support tube for a filter element, in which the support tube is an elongated tubular member having a central longitudinal axis extending through a hollow interior of the support tube. The support tube has a plurality of through openings extending through a circumferential wall of the support tube and is formed in one piece and a unitary component. The plurality of through openings are bounded by at least five longitudinal webs which are polygonal in cross section in at least some sections in the longitudinal direction of the support tube. The at least five longitudinal webs are in each case formed symmetrically.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.