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US 4,904,378 AGranted
Flat element for filtering and separation
AssigneeArai Machinery Corporation
InventorKoichi Arai
Life of this patent
Estimating the term…
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.
Claims5
A porous flat element for filtering and separation including;
- in combination:
- (a) a central member having at least a portion of a first helical groove of a desired cross section formed therein;
- (b) an annular member coaxial with said central member and having at least a portion of a second helical groove of a desired cross-section formed therein;
- (c) a plurality of radially extending support frames extending between said central member and said annular member;
- (d) locking grooves provides in said support frames;
- (e) a wire of uniform cross section formed into a helix and extending from said first helical groove in said central member to said second helical groove in said annular member and engaging said locking grooves in said radially extending frame members;
- (f) a locking member on said central member to fix said wire into said first helical groove in said central member;
- and
- (g) a locking member on said annular member to fix said wire in said second helical groove in said annular member.
6 more elements
Dependencies are inferred from the claim text.