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:
Oct. 22, 1991
Filed:
Dec. 05, 1989
Applicant:
Inventor:
Koichi Arai, Kanagawa, JP;
Assignee:
Arai Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
210232 ; 2104971 ; 2104973 ; 55400 ; 291637 ; 291638 ;
Abstract
A locking structure of a wire rod for a filter element which comprises a support member of either a cylindrical, flat plate or inverted conical shape, a threaded groove helically formed on an outer or inner peripheral surface of the support member, along which groove a wire rod of a desired sectional form is wound, leaving a spiral continuous slit between windings, allowing flow of a fluid to be filtered or separated. Each end portion of the wire rod is bent so as to be merely pushed and firmly secured in a locking hole formed on the support member, without using a locking member such as an insert member or wedge.