Title:
RESIN PIPE JOINT
Document Type and Number:
WIPO Patent Application WO/2000/028254
Kind Code:
A1
Abstract:
A resin pipe joint, wherein an inner ring (2) press fitted in one end portion of a pipe member (12) and combined therewith in a unitary state is provided with a cylindrical projection (8) at a projecting end portion thereof, an inner surface of the cylindrical projection (8) being formed into a conical taper surface (8a) the diameter of which increases gradually in the axially outward direction, the cylindrical projection (8) of an inner ring (2) including the conical taper surface (8a) being fitted axially in an inner portion of a receiving port (4) of a joint body (1) to form a cylindrical groove (6), which forms seal portions (7A, 7B), between the joint body (1) and inner ring (2), whereby a high contact pressure is generated between the taper surface (8a) and an outer surface (8b) and surfaces (10a, 4a) opposed thereto even by a small tightening force generated when a push ring (3) is screwed, to enable a sealing performance of a very high reliability to be secured.
Inventors:
NISHIO KIYOSHI (JP)
Application Number:
PCT/JP1998/004993
Publication Date:
May 18, 2000
Filing Date:
November 05, 1998
Export Citation:
Assignee:
NIPPON PILLAR PACKING (JP)
NISHIO KIYOSHI (JP)
NISHIO KIYOSHI (JP)
International Classes:
F16L33/22; F16L47/04; (IPC1-7): F16L33/22
Foreign References:
| JPH02117494U | 1990-09-20 | |||
| JPH1054489A | 1998-02-24 |
Other References:
None
See also references of EP 1046853A4
See also references of EP 1046853A4
Attorney, Agent or Firm:
Suzuye, Koichi (Komatsubaracho Kita-ku, Osaka-shi Osaka, JP)
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