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:
Jun. 10, 2014
Filed:
Aug. 25, 2009
Robert Theiler, Karlstad, SE;
Allan Jonsson, Kil, SE;
Robert Theiler, Karlstad, SE;
Allan Jonsson, Kil, SE;
Valmet AB, Sundsvall, SE;
Abstract
The pressure diffuser incorporates a screen that has a considerable weight that is moved by a connecting rod in a reciprocating manner between an upper and lower position. The connecting rod is maneuvered by a hydraulic cylinder for vertically moving the screen in a first slow stroke concurrent with pulp-flow and moving the screen in a second fast stroke countercurrent to pulp-flow. The pressure diffuser has an inlet defined therein at the bottom of the vessel but the hydraulic cylinder is located at the top of the vessel. This design enables an increased active pressure area in the hydraulic cylinder for the fast stroke of the screen. This reduces the power-rating needed for the hydraulic system.