Title:
TUBE COUPLING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2010/050763
Kind Code:
A2
Abstract:
The present invention relates to a tube coupling structure capable of coping with expansion and contraction operations of a tube, and capable of simply and consecutively connecting underground tubes having a fixed length in order to transfer a fluid. The tube coupling structure of the present invention comprises: a connecting end formed at one end of one tube in order to couple the tubes by inserting the end of another tube into the end of one tube; a first stepped surface formed in the inner circumference of the connecting end and having the same inner diameter as the outer diameter of the connecting tube; a second stepped surface formed in the outer side of the first stepped surface and having an inner diameter larger than the first stepped surface; and one or more rubber rings coupled to the end of an outer circumference of the other end of the connecting tube. If the other end of the connecting tube is pushed to the first stepped surface of the connecting end of one tube, one or more rubber rings are pushed, are transformed on the outer circumference of the connecting tube, and are positioned in a space formed between the second stepped surface and the outer circumference of the connecting tube. Cohesive pressure is applied to the outer circumference of the connecting tube and the second stepped surface through the rubber rings.
Inventors:
LEE SANG-KYEONG (KR)
Application Number:
PCT/KR2009/006314
Publication Date:
May 06, 2010
Filing Date:
October 30, 2009
Export Citation:
Assignee:
LEE SANG-KYEONG (KR)
International Classes:
F16L21/02
Foreign References:
| KR960005124Y1 | 1996-06-21 | |||
| KR200169650Y1 | 2000-03-02 | |||
| KR100696402B1 | 2007-03-19 | |||
| JP2005308182A | 2005-11-04 |
Attorney, Agent or Firm:
Lee, Seunghoon (KR)
이승훈 (KR)
이승훈 (KR)
Download PDF: