Welded stainless steel mesh cleanable filter
AssigneePurolator Technologies Inc.
InventorDonald M. Puckett
Life of this patent
Estimating the term…
Abstract
A filter comprising a center tube and a porous metal filter pack surrounding the center tube. The filter pack has a plurality of pleats extending longitudinally of the center tube with each of the plates having first and second ends. A metal-to-metal bond seals the first and second ends of the pleats closed. An additional metal-to-metal bond attaches the filter pack to the center tube and seals the filter pack to the center tube. The conventional filter end caps are eliminated to reduce entrapment of debris at the ends of the filter pack and to facilitate cleaning of the filter.
Claims9
A filter for filtering a fluid comprising:
- a center tube having an axially extending flow passage and radial ports providing communication between the flow passage and the exterior of the center tube;
- a porous metal filter pack arranged in a generally tubular configuration adjacent said center tube, one of said center tube and said filter pack being within the other of said center tube and said filter pack;
- means for attaching the filter pack to the center tube;
- said filter pack having a plurality of pleats extending along the center tube, each of said pleats having first and second opposite ends, said ends being spaced axially;
- a metal-to-metal bond for sealing said first ends and said second ends of said pleats closed;
- and
- said first ends of said pleats being spaced from each other and said second ends of said pleats being spaced from each other with such spaces being uncovered axially of the filter pack whereby entrapment of debris in such spaces is reduced and
- the fluid to be filtered can flow through the filter pack, the radial ports and the flow passage.
A filter for filtering a fluid comprising:
- means defining a fluid flow path for fluid to be filtered;
- a porous metal filter pack in said flow path;
- said filter pack having a plurality of pleats disposed in said flow path to increase the filtering area of the filter pack in said path, each of said pleats having first and second opposite ends;
- a metal-to-metal bond sealing said first ends and said second ends of said pleats closed;
- and
- said first ends of pleats being spaced from each other and said second ends of said pleats being spaced from each other with such spaces being uncovered axially of the filter pack whereby entrapment of debris in such spaces is reduced.
Dependencies are inferred from the claim text.