Title:
SCREW THREAD STRUCTURE FOR PREVENTING BEING PULLED OUT AND TOOL FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2016/163628
Kind Code:
A1
Abstract:
A screw thread structure for preventing being pulled out according to the present invention, with respect to a screw thread having a set pitch with a thread structure comprising, on the sides of each thread, a no-load-bearing flank which forms the forward-direction incline plane of the thread and a load-bearing flank which forms the backward-direction incline plane of the thread, has a no-load-bearing flank comprising: a first tangential part which comes into contact with the circular arc part on the tip of the counterpart thread of an object being coupled; and a second tangential part which is at a set angle from the first tangential part and which comes into contact with the circular arc part.
Inventors:
SEO HYEON WOO (KR)
CHANG WON BEOM (KR)
LEE JUNG JIN (KR)
CHANG WON BEOM (KR)
LEE JUNG JIN (KR)
Application Number:
PCT/KR2016/000027
Publication Date:
October 13, 2016
Filing Date:
January 05, 2016
Export Citation:
Assignee:
DAE KWANG METAL CO LTD (KR)
International Classes:
F16B39/30; B21H3/02; B21H3/08; B23G1/02; B23G1/16; F16B33/02
Foreign References:
| KR20120136213A | 2012-12-18 | |||
| JP2008208983A | 2008-09-11 | |||
| KR20050039499A | 2005-04-29 | |||
| JP2008307583A | 2008-12-25 | |||
| JP2003004016A | 2003-01-08 |
Other References:
See also references of EP 3282139A4
Attorney, Agent or Firm:
KO, Young Kap (KR)
고영갑 (KR)
고영갑 (KR)
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