Title:
ノンボルト継手構造およびノンボルト継手構造を形成する方法
Document Type and Number:
Japanese Patent JP4992098
Kind Code:
B2
Abstract:
A non-bolt joint structure comprising; a packing ring sealing between a receiving opening section and an insertion opening section; an engaging means provided with an inner circumference of the receiving opening section preventing a polyethylene pipe from disengaging from the receiving opening section by engaging with an outer circumferential surface of the polyethylene pipe; and a tubular metallic inner core fitting an inner circumference of the insertion opening section of the polyethylene pipe, wherein the inner core is plastically deformed to include a first bulge portion that its cross-sectional shape bulges toward an outward radial direction, a second bulge portion is formed so that the insertion opening section of the polyethylene pipe bulges toward the outward radial direction along the first bulge portion of the inner core, and the polyethylene pipe is prevented from disengaging by the engaging means engaging with the outer circumferential surface of the second bulge portion.
Inventors:
Yasuhiro Yamashita
Yokoyama Ohira
Yokoyama Ohira
Application Number:
JP2007149081A
Publication Date:
August 08, 2012
Filing Date:
June 05, 2007
Export Citation:
Assignee:
Mizuken Co., Ltd.
Maesawa Industry Co., Ltd.
Maesawa Industry Co., Ltd.
International Classes:
F16L13/14; F16L17/02; F16L21/02; F16L21/08
Domestic Patent References:
| JP2555119Y2 | ||||
| JP5015674Y2 | ||||
| JP7041988Y2 | ||||
| JP3117930U | ||||
| JP11201343A | ||||
| JP2005061549A | ||||
| JP9294822A | ||||
| JP11141772A | ||||
| JP2003097777A | ||||
| JP4029185Y2 | ||||
| JP2571278Y2 |
Attorney, Agent or Firm:
Yoshinobu Yamamura