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:
Mar. 02, 1993
Filed:
Feb. 27, 1991
Koichi Arai, Kanagawa, JP;
Arai Machinery Corporation, Kanagawa, JP;
Abstract
A cylindrical element for filtering various substances and separating particles therefrom is shown wherein a wire is cylindrically wound in the form of a helix to form a helical slit between the adjoining peripheral margins of the wire thereby increasing to the maximum the area for filtering or separation treatment. The helical slit forms a linear treatment hole with improved filtering and separation deficiency. The cylindrically wound wire may be supported by actually extending support members having grooves therein or by cylindrically-shaped support members having openings of various sizes and shapes. An embodiment of the invention wherein the cylindrical element is mounted in a pipe is also shown.