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. 12, 2002
Filed:
Mar. 13, 2000
Lars-Göran Rundqvist, Tumba, SE;
Jan Backman, Järfälla, SE;
Roine Andersson, Furusund, SE;
GL&V Sweden AB, Stockholm, SE;
Abstract
A method for manufacturing a screen plate with screen slots from a thin plate ( ), which screen slots ( ) are achieved by cutting. The plate is formed by bending to a screen plate of a desired shape. The screen slots ( ) are produced by a laser beam for cutting, which hits the plate from one of its sides, the inlet side. Focus for the beam is situated on a predetermined depth between both sides of the plate. The slot is obtained by at least two cutting operations following each other, in which the direction ( ) of the laser beam forms two different angles with the main plane of the plate. There is obtained a screen slot ( ), the cross section of which increases against the other side of the plate, the outlet side.