The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 1980
Filed:
Nov. 24, 1978
Otto C Krolopp, Downers Grove, IL (US);
Leonard M Haluch, Chicago, IL (US);
Prater Industries, Inc., Chicago, IL (US);
Abstract
A centrifugal screening apparatus for scalping or sizing bulk materials in which an auger assembly conveys the bulk materials from an intake chamber into a cylindrical screening sleeve mounted within an enclosed screening chamber and subjects the bulk materials to centrifugal force for impingment against the screening sleeve, with the fines passing through the screen for gravity discharge from the screening chamber and the tailings being conveyed to a separate tailings chamber for separate gravity discharge therefrom. The auger assembly within the screening sleeve is equipped with a cylindrical shell integral with the auger assembly and extending the effective length of the screening sleeve that defines along the length of same uniformly spaced apertures thereabout that are separated by imperforate walling. The shell apertures are proportioned to restrict bulk materials movement therefrom under the centrifugal forces involved so that the bulk material feeding action of the auger assembly longitudinally of the screening sleeve acts to distribute the bulk material lengthwise of the shell for uniform screening application of the bulk materials to the screening sleeve. Tramp metal and other foreign materials are retained within the shell for removal when the apparatus is not operating, thereby protecting the screening sleeve against rupture during operation.