Patent · US Expired

Filter device

US7681739B2 · kind B2 · utility

1Cited by

10References

22Claims

0Family size

Assignee

HYDAC PROCESS TECHNOLOGY GMBH · DE

Inventors

Norbert Lang · Blieskastel, DE
Jurgen Hausdorf · Saarburg, DE
Ralf Wnuk · Bexbach, DE

Key dates

Filing date	Jan 3, 2001
Grant date	Mar 23, 2010
Priority date	—
Expiry date	Mar 21, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/44
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter device includes a filter housing (10), a filter inlet (12), a filter outlet (14), and a filter element (16). The filter element divides a filter area (18) into two partial areas (20, 22). One partial filter areas is conical in form with the cross-section of that partial area (20) being tapered from the filter inlet (12) to the filter outlet (14). The partial areas are separated from each other by the filter element. This arrangement results in an optimum residence time distribution inside the filter device at a uniform flow rate, which is particularly useful for highly viscous fluids such as polymer melts or similar.

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