Hollow cylindrical filter and manufacturing apparatus

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11951427
APP PUB NO 20220111320A1
SERIAL NO

17456226

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Embodiments of the present invention provide a hollow cylindrical filter for removing efficiently foreign substances from fluids. This is performed by forming complicated passages including an axial direction and a radial direction in the filter. The hollow cylindrical filter is formed by winding a metal wire rod in a spiral and multilayered manner. The metal wire rod includes a recess formed throughout the entire length in a longitudinal direction, or recesses repeated along said longitudinal direction. Some wire rod layers extend in an axial direction of the hollow cylindrical filter while the adjacent wire rod layers extend in an intersecting direction, thereby forming a plurality of communication paths for communicating between the overlapping wire rod layers. Additionally, a space is formed between the recess of one wire rod layer and another adjacent wire rod layer, allowing the plurality of communication paths to communicate with each other.

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Patent Owner(s)

  • FUJI FILTER MANUFACTURING CO. LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kikuchi, Kiyohisa Tokyo, JP 4 3
Matsumoto, Takashi Tokyo, JP 567 7230
Yoshida, Yutaka Tokyo, JP 233 3237

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