Patent · US Active

Tetrahedral filter media

US11376541B2 · kind B2 · utility

0Cited by

66References

20Claims

0Family size

Assignee

Cummins Filtration IP, Inc. · US

Inventors

Ming Ouyang · Beijing, CN
Miao Li · Shanghai, CN

Key dates

Filing date	Dec 12, 2017
Grant date	Jul 5, 2022
Priority date	—
Expiry date	Nov 21, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2279/60
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Filter media having generally tetrahedral shaped flow channels is described. The filter media is generally formed by a flat filter sheet and a formed sheet. The formed sheet may be formed by a curves and/or pleats in the sheet. The curves and/or pleats form the tetrahedron channels. Embossments, such as dimples, are provided on the crests formed by the curves and/or pleats. The embossments help to maintain spacing between adjacent layers of the filter media, thereby increasing dust holding capacity and decreasing pressure drop over similarly configured filter media not having the embossments.

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