Filter insert with variable length center tube
US7191903B2 · kind B2 · utility
2Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 20, 2004 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Jan 21, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/0415
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter insert (1) having an annular filter element (2) which is connected in a fluid-tight manner to a cover (5) on one axial end face (3) and to a base (6) on an opposite axial end face (4). The filter element (2) has a central channel (25) in which a central tube (8, 28) is situated. The central tube (8, 28) extends between the cover (5) and the base (6) and communicates with a central opening (7) in the cover (5). To ensure high stability of the filter (1) with a low manufacturing complexity, the central tube (8, 28) is designed to have a variable length in the direction of its longitudinal central axis (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.