Invention Grant
- Patent Title: Hollow cylindrical filter and manufacturing apparatus
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Application No.: US17456226Application Date: 2021-11-23
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Publication No.: US11951427B2Publication Date: 2024-04-09
- Inventor: Takashi Matsumoto , Yutaka Yoshida , Kiyohisa Kikuchi
- Applicant: FUJI FILTER MANUFACTURING CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: FUJI FILTER MANUFACTURING CO., LTD.
- Current Assignee: FUJI FILTER MANUFACTURING CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: MASUVALLEY & PARTNERS
- Agent Peter Martinez
- Priority: JP 14221522 2014.10.30
- Main IPC: B01D39/00
- IPC: B01D39/00 ; B01D39/12 ; B01D46/00 ; B01D46/24 ; B21B1/16 ; B21C37/04 ; B21F27/18

Abstract:
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.
Public/Granted literature
- US20220111320A1 HOLLOW CYLINDRICAL FILTER AND MANUFACTURING APPARATUS Public/Granted day:2022-04-14
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