SEALING MATERIAL, PRESSING RING, COUPLING, AND VALVE

Title:

SEALING MATERIAL, PRESSING RING, COUPLING, AND VALVE

Document Type and Number:

WIPO Patent Application WO/2014/002745

Kind Code:

A1

Abstract:

The present invention involves: forming a first projection (19) in the outer-circumferential section of a valve part (18); forming a second projection (20) in the receiving-port far-end section of the valve part (18); forming a tapered part (28) which decreases in diameter from the inner circumference of the heel part (17) toward the inner circumference of the second projection (20); forming a third projection (21) on the tapered part (28) so as to project to the inside in the radial direction; forming the inner diameter of the third projection (21) so as to be smaller than the outer diameter of the insertion port and larger than the inner diameter of the second projection (20); forming the angle direction (G) of the tapered part (28) in a manner such that a first dimension (B) in the opposite angle direction from the first projection (19) to the third projection (21) is smaller than a second dimension (C) in the radial direction (A) from the first projection (19) to the second projection (20); and compressing the interval between the first projection (19) and the third projection (21) in the radial direction (A), resulting in the retention of watertightness between the receiving port and the insertion port.

Inventors:

KISHI SHOZO
KAGAWA TAKAAKI
ODA KEITA
ITO KAZUYA

Application Number:

PCT/JP2013/066013

Publication Date:

January 03, 2014

Filing Date:

June 11, 2013

Export Citation:

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Assignee:

KUBOTA KK (JP)

International Classes:

F16L21/04

Foreign References:

JP2008298155A	2008-12-11
JP2010174906A	2010-08-12
JPH0341264A	1991-02-21
JP2011099515A	2011-05-19
JP2011089528A	2011-05-06
JP4836870B2	2011-12-14
JP2010286110A	2010-12-24

Other References: