Filter casing and pipe extension therefor
US5614090A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1995 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Jul 25, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D27/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pipe extension for a filtering pot of a return filter has an outlet connection projecting from the filtering pot at its free end and a pipe secured to the outlet connection. An annular groove extending in circumferential direction is arranged at the outlet connection and an annular seal which does not protrude radially beyond the outer circumference of the outlet connection is inserted into the annular groove. Radially projecting, axially extending conical webs are provided at the outer circumference of the pipe connection in the region between the annular groove and the filtering pot and a pipe consisting of metal is pushed onto these webs, whereby the pushed-on pipe is expanded by the conically extending webs to achieve a secure seat. A bead reaching into the annular groove is introduced into the pushed-on pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.