Title:
HOLLOW PIPE HAVING CHANGING CROSS-SECTIONAL AREA, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2022/145529
Kind Code:
A1
Abstract:
A hollow pipe having a changing cross-sectional area is disclosed. The hollow pipe having a changing cross-sectional area of the present invention extends from one end to another end to form the length direction, the hollow pipe: formed by extending in the length direction; comprising a plurality of hollow pipe units which are coupled to one another to form the hollow pipe; and having a hollow formed inside the hollow pipe. The horizontal cross-sectional area of the hollow changes along the length direction, and a charging module may be provided in the hollow.
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Inventors:
YOO JIN-HO (KR)
LEE JUNG HOON (KR)
LEE JUNG HOON (KR)
Application Number:
PCT/KR2020/019357
Publication Date:
July 07, 2022
Filing Date:
December 30, 2020
Export Citation:
Assignee:
MH TECH INC (KR)
International Classes:
F16L53/70; B22C9/10; B22D19/00; B22D29/00; F16L9/02
Foreign References:
| KR102174239B1 | 2020-11-04 | |||
| JP2007152425A | 2007-06-21 | |||
| KR102181414B1 | 2020-11-24 | |||
| KR102174238B1 | 2020-11-05 | |||
| KR20170128817A | 2017-11-24 |
Attorney, Agent or Firm:
DARAE LAW & IP, LLC (KR)
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