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:
Dec. 01, 1981
Filed:
Feb. 15, 1980
Applicant:
Inventor:
Alf I Lindstrom, Sundsbruk, SE;
Assignee:
Sunds Defibrator Aktiebolag, , SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C / ; B07B / ;
U.S. Cl.
CPC ...
2412612 ; 209240 ; 209209 ; 209271 ; 209379 ; 2103602 ;
Abstract
Screening apparatus for fractionating material suspensions has a screen gap which is defined by a rotatable member and a stationary member. One of these members is provided with at least one projection which extends into the screen gap to inhibit clogging of the gap with coarse suspension materials. Any coarse suspension materials stuck in the screen gap can be removed from the screen gap by a wiper element extending from the rotatable member and overlapping the screen gap.