Patent · US Expired

Filter cartridge with center tube

US6615990B1 · kind B1 · utility

36Cited by

13References

6Claims

0Family size

Assignee

Filterwerk Mann & Hummel GmbH · DE

Inventors

Guenter Jokschas · Murrhardt, DE
Bruno M. Sommer · Ludwigsburg, DE
Matthaeus Huber · Dingolfing, DE

Key dates

Filing date	Oct 13, 2000
Grant date	Sep 9, 2003
Priority date	—
Expiry date	Oct 13, 2020

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/4084
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter cartridge which has an insertable center tube including an upper part (13) and a lower part (14) which can be coupled together in the cartridge by a snap fastener (21). The snap fastener (21) is configured such that it can be made without undercuts by simple injection molding dies. Therefore the filter cartridge with the center tube according to the invention is very economical.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.