Patent · US Expired

Method of filtering the effluent from a wire EDM process

US4927547A · kind A · utility

16Cited by
18References
16Claims
0Family size

Inventor

Key dates

Filing dateOct 26, 1988
Grant dateMay 22, 1990
Priority date
Expiry dateOct 26, 2008

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB01D2201/043
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

The present invention is directed to a method of removing impurities from the effluent of an EDM process wherein the improvement comprises steps of: providing a filter apparatus; providing the effluent from an EDM process to said apparatus; filtering impurities from the effluent thereby forming a filtrate; removing said apparatus from said effluent; and back flushing said apparatus with said filtrate, said back flushing conducted at a pressure greater than atmospheric pressure, thereby removing the impurities from said apparatus.

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