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:
Jul. 22, 2003
Filed:
Mar. 28, 2001
Peter Seifert, Middletown, OH (US);
Kadant Black Clawson, Inc., Middletown, OH (US);
Abstract
A wedge wire for use in a wire type screen for screening papermaker's stock is formed with an elongated body ( ) having an enlarged head ( ) at the inlet surface of the screen. The head ( ) is formed with tapered walls ( ) that cooperate to define grooves ( ) at the inlet surface between adjacent elements including an upstream wall ( ) and a downstream wall ( ). A radiused protuberance or projection ( ) defines one wall of a screening slot ( ), with a wall surface ( ) of an adjacent wedge wire element. The slot wall formed by the projection ( ) is free of sharp edges and is limited in length, in the direction of flow through the slot ( ), not substantially exceeding the gap width of the slot. The upstream wall ( ) defining the groove ( ) provides protection for the slot ( ) against impact and damage by contaminants that may be contained in the papermaker's stock. The slot ( ) is free of sharp corners so as not to impede flow through the slot.