Title:
分岐用スリーブ及び分岐部の形成方法
Document Type and Number:
Japanese Patent JP6685576
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a branching sleeve capable of suppressing the wear of a friction part of a radially enlarged roller while retaining the strict rotation of a radially enlarged roller at a radially enlarging time, the seizure between the radially enlarged roller and the sleeve, the torque increase at a radially enlarged time, the abnormal consumption of a consumable part such as a roller pin, a sliding material or the like.SOLUTION: A branching sleeve of a generally cylindrical shape for forming a caulking in a main pipe when bent outward by a radially enlarging jig arranged in a bored part bored in a main pipe and formed with a wear part is formed circumferentially at the vicinity of he leading end of the inner face of said branching sleeve thereby to form a friction receiving part for meshing with the friction part of said radially enlarged roller.SELECTED DRAWING: Figure 22
Inventors:
Toyohiko Yoneda
Yoneda Tetsuzo
Hisashi Yasui
Yoneda Tetsuzo
Hisashi Yasui
Application Number:
JP2016138053A
Publication Date:
April 22, 2020
Filing Date:
July 12, 2016
Export Citation:
Assignee:
Yone Co., Ltd.
International Classes:
F16L41/06
Domestic Patent References:
| JP5322088A | ||||
| JP11190457A | ||||
| JP49117355A | ||||
| JP2013202615A | ||||
| JP3009239U | ||||
| JP2016223625A |
Attorney, Agent or Firm:
Kenichiro Matsuo
Yasuo Ichikawa
Yasuo Ichikawa