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:
Apr. 30, 1991
Filed:
Dec. 08, 1989
Applicant:
Inventor:
Koichi Arai, Kanagawa, JP;
Assignee:
Arai Machinery Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B07B / ;
U.S. Cl.
CPC ...
209400 ; 291637 ; 209395 ; 2104971 ;
Abstract
A conical element for filerting various substance and separating particles wherein a wire is wound in the form of a helix to form a helical slit between the adjoining peripheral margins of the wire thereby producing a linear treatment opening and increasing the area for filtering or separation to the utmost to improve the filtering or separation efficiency.