Title:
PRESSING RING, PIPE JOINT, AND METHOD FOR JOINING PIPES
Document Type and Number:
WIPO Patent Application WO/2023/032988
Kind Code:
A1
Abstract:
A pressing ring 20 provided to a pipe joint 1 in which a sealing member 15 is inserted between the outer periphery of a spigot 3 and the inner periphery of a socket 5, the pressing ring 20 being externally fitted on the spigot 3 so as to face an opening end surface 21 of the socket 5 from the outer side and being connected to the socket 5 by a plurality of fasteners 22, 23 to push the sealing member 15 toward a deeper side of the socket 5. The pressing ring 20 has a pressing surface 36 that presses the sealing member 15, a plurality of fastener insertion holes 37 through which the fasteners 22 are inserted, a contact portion 38 that is brought into contact with the opening end surface 21 of the socket 5, and a tapered surface 47 formed on an inner periphery 41. The tapered surface 47 has the diameter expanded from a side closer to the pressing surface 36 to the opposite side farther away therefrom.
Inventors:
TANAKA RYUNOSUKE (JP)
KOMARU YUITO (JP)
ODA KEITA (JP)
KOMARU YUITO (JP)
ODA KEITA (JP)
Application Number:
PCT/JP2022/032609
Publication Date:
March 09, 2023
Filing Date:
August 30, 2022
Export Citation:
Assignee:
KUBOTA KK (JP)
International Classes:
F16L21/04; F16L21/08
Foreign References:
| JP2011002091A | 2011-01-06 | |||
| JPS4821815B1 | 1973-07-02 | |||
| JP2021067282A | 2021-04-30 | |||
| JP2017180472A | 2017-10-05 | |||
| JPS55107178A | 1980-08-16 | |||
| JPS59217090A | 1984-12-07 | |||
| JP2021067282A | 2021-04-30 |
Attorney, Agent or Firm:
MORIMOTO PATENT ATTORNEYS (JP)
Download PDF: