Title:
PIPE JOINT
Document Type and Number:
WIPO Patent Application WO/2021/075298
Kind Code:
A1
Abstract:
In a pipe joint 1: a spigot 5 is inserted into a socket 3; a lock ring 8 is accommodated in a lock ring-accommodating groove 7 formed in the inner circumference of the socket 3; and an engaging part 15 is formed in the outer circumference of the spigot 5 and engages with the lock ring 8 from a socket rear side in a separation direction A of the spigot 5, thereby making it possible to prevent the spigot 5 from separating from the socket 3. The engaging part 15 is formed at a location that has been recessed from a distal end of the spigot 5 in the separation direction A of the spigot 5. Between the distal end of the spigot 5 and the engaging part 15, a flexion-inhibiting member 35 for restraining the socket 3 and the spigot 5 in a flexion direction C is provided between the inner circumference of the socket 3 and the outer circumference of the spigot 5.
Inventors:
KISHI SHOZO (JP)
ODA KEITA (JP)
TANAKA RYUNOSUKE (JP)
ODA KEITA (JP)
TANAKA RYUNOSUKE (JP)
Application Number:
PCT/JP2020/037732
Publication Date:
April 22, 2021
Filing Date:
October 05, 2020
Export Citation:
Assignee:
KUBOTA KK (JP)
International Classes:
F16L21/04; F16L21/08
Domestic Patent References:
| WO2019181918A1 | 2019-09-26 |
Foreign References:
| JPS5546840U | 1980-03-27 | |||
| JP2011106671A | 2011-06-02 | |||
| JP2004263813A | 2004-09-24 | |||
| JP2008089095A | 2008-04-17 | |||
| JP2004162854A | 2004-06-10 | |||
| JPS5434125A | 1979-03-13 | |||
| JPS5783982U | 1982-05-24 | |||
| JPH10332061A | 1998-12-15 | |||
| JP2004263813A | 2004-09-24 |
Other References:
See also references of EP 4043771A4
Attorney, Agent or Firm:
MORIMOTO INT'L PATENT OFFICE (JP)
Download PDF: