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. 30, 2004
Filed:
Nov. 25, 2002
Applicant:
Inventor:
Gordon James Cook, late of Newtonhill, GB;
Assignee:
United Wire Limited, Eidinburg, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B07B 1/04 ; B07B 1/28 ; B07B 1/40 ; B01D 2/952 ; D03D 1/502 ;
U.S. Cl.
CPC ...
B07B 1/04 ; B07B 1/28 ; B07B 1/40 ; B01D 2/952 ; D03D 1/502 ;
Abstract
A filtering screen comprises a fine woven wirecloth filtering mesh ( ) disposed above a coarse woven wirecloth support mesh ( ). An intermediate woven wirecloth mesh ( ) is disposed between the fine woven mesh ( ) and the coarse woven mesh ( ), the intermediate mesh ( ) extending over a proportion of the area of the screen at or towards the rear thereof, said proportion being in the range of 20% to 40% of the area of the screen, and preferably substantially one third of the area of the screen.