Title:
流体管の離脱防止装置
Document Type and Number:
Japanese Patent JP6888818
Kind Code:
B2
Abstract:
To provide a removal prevention device of a fluid pipe which achieves excellent stability even before a pipe joint is assembled while achieving cost reduction.SOLUTION: A push ring 3 includes: an annular housing 4 fitted on a spigot 2; a push bolt 5 inserted into a through hole 40 formed at the housing 4; an engagement part 6 which is pressed to the inner side in a pipe diameter direction by the push bolt 5 to be engaged with an outer peripheral surface of the spigot 2; and a piece 7 having a female screw hole 70 which is threadedly engaged with the push bolt 5 at the inner side of the through hole 40 in the pipe diameter direction. The through hole 40 is a clearance hole which is not provided with a female screw. The housing 4 is provided with a lower surface support part 41 which contacts with a lower surface of the piece 7 facing the inner side in the pipe diameter direction.SELECTED DRAWING: Figure 2
Inventors:
Hiroyuki Totsugi
Application Number:
JP2017115394A
Publication Date:
June 16, 2021
Filing Date:
June 12, 2017
Export Citation:
Assignee:
Water Supply Technology Development Corporation
International Classes:
F16L21/08
Domestic Patent References:
| JP48094013A | ||||
| JP55015450U | ||||
| JP7292633A | ||||
| JP11178760A | ||||
| JP2016011753A |
Attorney, Agent or Firm:
Patent Business Corporation Unias International Patent Office