Title:
SLEEVE FOR CONNECTING STEEL BAR
Document Type and Number:
WIPO Patent Application WO/2020/105897
Kind Code:
A1
Abstract:
The present invention relates to a sleeve for connecting a steel bar, wherein a body prevents generation of tolerance at the circumferential surface of at least one of an upper steel bar and a lower steel bar through a tolerance generation preventing unit, the body allowing the upper steel bar to be inserted from one side thereof in an axial direction and the lower steel bar to be inserted from the other side thereof in the axial direction. Unlike the prior art, the present invention can: reduce the amount of filling liquid filled in the body through the modification of the structure to prevent generation of tolerance between the steel bar and the inner side of the body of the sleeve to which the steel bars are connected to each other by being axially inserted from the upper and lower sides of the sleeve; reduce manufacturing costs and a construction period and enhance durability of the sleeve by preventing a connection part between the steel bar and the sleeve from being damaged or broken; and further improve durability of a plug through insertion and assembly of the plug into the upper part of the body and then screw-coupling of the steel bar to the plug.
Inventors:
PARK MYUNG HYUN (KR)
PARK HYUN JU (KR)
PARK HYUN JU (KR)
Application Number:
PCT/KR2019/014607
Publication Date:
May 28, 2020
Filing Date:
October 31, 2019
Export Citation:
Assignee:
DAE DONG M S LTD (KR)
JSPACE CO LTD (KR)
JSPACE CO LTD (KR)
International Classes:
E04C5/16
Foreign References:
| KR101465514B1 | 2014-11-26 | |||
| JP2008063730A | 2008-03-21 | |||
| KR101224018B1 | 2013-01-21 | |||
| JPH05171741A | 1993-07-09 | |||
| JP2013181278A | 2013-09-12 | |||
| KR20170068773A | 2017-06-20 | |||
| JPH08151735A | 1996-06-11 |
Attorney, Agent or Firm:
AJU INTERNATIONAL LAW & PATENT GROUP (KR)
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