Patent · US Expired

Air pillow in the air chambers of a bottom pulsed jigging machine

US4832835A · kind A · utility

2Cited by

5References

8Claims

0Family size

Assignee

Klockner-Humboldt-Deutz AG · DE

Inventors

Werner Strauss · Kehl, DE
Helmut Timmermann · Bochum, DE
Werner Hasse · Hamburg, DE
Karl-Heinz Weiffen · Hemer, DE

Key dates

Filing date	Jun 1, 1987
Grant date	May 23, 1989
Priority date	—
Expiry date	Jun 1, 2007

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB03B5/24
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method and apparatus for treating minerals such as coal in a jig bed having a downwardly opening air chamber beneath the bed wherein the chamber has an air compartment at the upper end retaining a cushioned pillow of air between each jig pulsation with controlled air admitted and relieved from the chamber so that when air is relieved, the water rising in the chamber compresses the air at the upper end and a cushion of air is retained so that with admission of pressurized air, the cushion aids in forcing the column of water from the chamber, particularly at the beginning of operation of the jig.

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