Patent · US Expired

Dust collecting filter

US4441899A · kind A · utility

27Cited by

9References

7Claims

0Family size

Assignee

NIPPON SOKEN, INC. · JP

Inventors

Shigeru Takagi · Anjo, JP
Masahiro Tomita · Anjo, JP

Key dates

Filing date	Dec 15, 1981
Grant date	Apr 10, 1984
Priority date	—
Expiry date	Dec 15, 2001

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S55/30
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A dust collecting filter is provided with a zigzag shaped filter member having small meshes and comparatively large flowing resistance, which is disposed within a casing so that the zigzag shaped cross section thereof extends in the fluid flowing direction. Other filter members having comparatively small flowing resistance are charged within the spaces defined by the zigzag shaped filter member.

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