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:
Nov. 06, 1990
Filed:
May. 26, 1989
Bjorn Ahs, Karlstad, SE;
Kamyr AB, Karlstad, SE;
Abstract
An apparatus for screening a suspension of fibrous cellulose pulp comprising a housing and a rotor shaft, the housing having an inlet for the suspension and containing first and second screening sections, each comprising a rotor member mounted on the rotor shaft and a cylindrical screen cooperating therewith and defining an outer accept chamber and an inner screening chamber, the first screening section including an inlet chamber communicating with the screening chamber of the first screening section, and an outlet chamber communicating with the screening chamber of the first screening section, for discharging a first reject, and the second screening section including an outlet chamber communicating with the screening chamber of the second screening section, for discharging a second reject from the apparatus, and the accept chamber of the second screening section having an outlet for discharging screened fiber suspension. The outlet chamber of the first screening section includes an outlet disposed for discharging the first reject from the apparatus, and the accept chamber of the first screening section is in open communication with the screening chamber of the second screening section via an interior connection for conveying the fiber suspension screened in the form of an accept in the first screening section to the second screening section to be re-screened, the outlet from the accept chamber being disposed for discharging repeatedly screened fiber suspension in the form of a final accept.