Patent · US Active

Filtration element having a variable density sidewall

US7955407B2 · kind B2 · utility

0Cited by
19References
1Claims
0Family size

Inventor

Key dates

Filing dateApr 13, 2010
Grant dateJun 7, 2011
Priority date—
Expiry dateApr 13, 2030

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB01D2275/305
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A filter made of specifically arranged filaments. The filter has an upstream side where fluid enters and a downstream side where fluid exits. The filaments are greatest in diameter near the upstream side wherein the filaments continuously and gradually decrease in thickness toward the downstream side. The pores or spaces between the filaments are largest near the upstream side and decrease gradually toward the downstream side. This allows various size particles to become entrained in the filter in an evenly distributed manner.

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