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Title:
EARTHQUAKE-PROOF GROOVELESS COUPLING
Document Type and Number:
WIPO Patent Application WO/2018/012681
Kind Code:
A1
Abstract:
The present invention relates to an earthquake-proof grooveless coupling for enabling pipes to be connected only by pushing a grooveless pipe into both sides thereof in a state in which upper and lower coupling segments are assembled and fastening a bolt and a nut. The earthquake-proof grooveless coupling (1000) of the present invention comprises: a packing (1100) made from an elastic material and into which pipes (1, 2) for transferring fluid are fitted from the left and right sides thereof; the upper and lower coupling segments (1200, 1300) for encompassing the packing at the upper and lower parts thereof so as to accommodate the same, and restricting the axial movements of the pipes (1, 2) at both end portions thereof as the segments become closer to each other; and a fastening means (1400) comprising the bolt (1410) and the nut (1420) for fastening the upper and lower coupling segments to each other, wherein the upper and lower coupling segments have holding parts (1220, 1320) formed in a saw-toothed shape and respectively provided at both end portions (1210, 1310) in the direction of the central axis of the inner peripheral surface thereof, the holding parts are formed to be smaller than the radii of the pipes (1, 2) and formed to have greater hardness than the pipes (1, 2), and the upper and lower coupling segments have cut grooves (1230, 1330) formed to have a predetermined width in the axial direction at equal angles in the radial direction of both end portions (1210, 1310) in the direction of the central axis of the inner peripheral surface thereof, and formed in a slot shape so as to be positioned between the outer diameter of the holding part and the inner diameter of a packing accommodating groove.

Inventors:
NAM, Sang Keon (#105-703, 422 Mirae-ro,Paju-si, Gyeonggi-do, 10907, KR)
Application Number:
KR2016/013079
Publication Date:
January 18, 2018
Filing Date:
November 14, 2016
Export Citation:
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Assignee:
NAM, Sang Keon (#105-703, 422 Mirae-ro,Paju-si, Gyeonggi-do, 10907, KR)
International Classes:
F16L21/06; F16B2/06; F16L17/06; F16L21/08
Foreign References:
KR20070012723A2007-01-26
KR200157563Y11999-09-15
KR20080073726A2008-08-11
JPH0791576A1995-04-04
KR200213650Y1
Attorney, Agent or Firm:
AJU INT'L LAW & PATENT GROUP (12-13th Floor, Gangnam Mirae Tower 174 Saimdang-,Ro,Seocho-gu, Seoul, 06627, KR)
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