Patent · US Expired

Material separating machine

US4319991A · kind A · utility

17Cited by
6References
7Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 24, 1980
Grant dateMar 16, 1982
Priority date
Expiry dateOct 24, 2000

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB07B13/16
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

Apparatus for separating a composite of three materials into their particular groups includes a first screen (17) which permits the group of the smallest sized material to pass therethrough. The materials not passing through the screen (17) are fed to a trough (21). Second screens (23) are provided near the end of the trough which permits the group of the mid-sized materials to pass therethrough. The group of the largest sized materials move to and through a discharge spout (25) at the end of the trough (21).

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