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US 5,690,823 AGranted
Filtration medium
OwnerJohn Reipur, Hans Olseninventors
Life of this patent
Estimating the term…
Abstract
A filtration medium made from a plurality of solid fibers aligned in the same direction and packed and bundle together and compressed at a portion thereof by a retainer member, and a displacement member disposed inside the packed fibers forming close packed aligned fibers defining a fluid flow passages between the fibers having a cross-sectional area capable of retaining particles from a fluid passing therethrough.
Claims28
A filtration medium for use in filtering a fluid comprising:
- a plurality of solid fibers all extending in alignment for at least a predetermined distance in substantially the same general direction;
- a retaining element disposed at the outer side of the plurality of aligned fibers;
- a displacement member inserted inside the plurality of aligned fibers, for pressing essentially all the aligned fibers into a close packed configuration along a portion thereof adjacent the retaining member and displacement member;
- and
- a plurality of fluid-flow passages defined between the closed packed fibers, each of the fluid flow passages having a cross-sectional area sufficiently small to retain particles to be filtered from the fluid passing therethrough, each of the fibers having a ratio of length to maximum cross sectional dimension of at least 10.
2 more elements
A method for making a filtration medium for use in filtering a fluid, comprising:
- providing a plurality of solid fibers, a retaining member having an opening, and a displacement member;
- arranging the fibers so that the fibers extend in alignment for at least a predetermined distance in substantially the same general direction to form a fiber bundle;
- placing the fiber bundle in the opening;
- and
- inserting the displacement member into the bundle of fibers so as to compress essentially all of the fibers between the displacement member and the retaining member, forming a close packed configuration along the portion thereof, fluid-flow passages formed between the close packed fibers, each of the fluid flow passages having a cross-sectional area sufficiently small to retain particles to be filtered from the fluid passing therethrough, each of the fibers having a ratio of length to maximum cross sectional dimension of at least 10.
2 more elements
Dependencies are inferred from the claim text.