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:
Feb. 27, 1990
Filed:
Apr. 20, 1988
Applicant:
Inventor:
Koichi Arai, Kanagawa, JP;
Assignee:
Arai Machinery Corporation, , JP;
Primary Examiner:
Int. Cl.
CPC ...
B07B / ;
U.S. Cl.
CPC ...
209400 ; 209392 ; 209395 ; 210483 ;
Abstract
A flat element for filtering various substances and separating particles wherein a wire is planarly wound in the form of a vortex to form a vortical slit between the adjoining peripheral margins of the wire thereby increasing the area for filtering or separation treatment as so-called linear treatment holes to the utmost to improve the filtering or separation efficiency.