Title:
DUCT UNIT REINFORCING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/212121
Kind Code:
A1
Abstract:
The present invention relates to a reinforcing method which applies a straight rail holder type to a duct having a rectangular cross section, the transverse side and longitudinal side of which have variable lengths, wherein: four bars are bonded to four outer walls of the duct, each bar comprising an equilateral trapezoidal profile portion, the base of which is open, and a pair of flat sheet portions integrated with the equilateral trapezoidal profile portion and extending in opposite directions away from each other from the bottoms of a pair of oblique sides of the equilateral trapezoidal profile portion; and a bent angle-type connector, which is fitted in a positive fit manner onto the adjoining ends of two bars at each of four corners of the duct, is bonded to the pair of flat sheet portions adjacent to the end of each of the two bars.
Inventors:
HWANG SANG-GEUN (KR)
Application Number:
PCT/KR2019/000365
Publication Date:
November 07, 2019
Filing Date:
January 10, 2019
Export Citation:
Assignee:
SAMIL STEEL CO LTD (KR)
HWANG SANG GEUN (KR)
HWANG SANG GEUN (KR)
International Classes:
F24F13/02; F16L9/00; F16L9/04
Foreign References:
| KR20120024851A | 2012-03-14 | |||
| JP2007147269A | 2007-06-14 | |||
| JP3087845U | 2002-08-23 | |||
| KR20140136826A | 2014-12-01 | |||
| KR20100004840U | 2010-05-11 | |||
| KR20010053836A | 2001-07-02 |
Attorney, Agent or Firm:
PARK, Yong-min (KR)
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