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:
Mar. 14, 1989
Filed:
Mar. 05, 1987
Josef Tra, Heidenheim, DE;
J. M. Voith GmbH, Heidenheim, DE;
Abstract
The screen wire has depressions (5), on the base of which there are fine slits (4) or wire holes. The depressions are generally oblong, their longitudinal extension being parallel or slightly inclined to the axis of rotation of a rotor and the screening blades (2) skirting close to the screen surface. The front edge of the depressions (5)--viewed in the direction of rotation of the screening blades (2)--is inclined towards the enveloping surface of the screen, and has an angle of between 15.degree. and 60.degree. from the surface perpendicular and is preferably inclined at 30.degree.. The slits or rows-of-holes run parallel to the front edge of the depressions (5). These screen cages for the screening of screening fiber suspensions provide better screening efficiency and they have less blockage.