Title:
PIPING FASTENING STRUCTURE AND PIPING
Document Type and Number:
Japanese Patent JP2018062998
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a piping fastening structure capable of increasing not only working efficiency but also shaft accuracy and fastening strength.SOLUTION: A piping fastening structure, in which ends of a pair of pieces of piping for use in civil engineering are connected to each other, comprises a male screw part and a female screw part. The male screw part is provided at the end of the one piece of piping. The female screw part is provided at the end of the other piece of piping, and screwed into the male screw part. A material for the piping is metal. In the piping fastening structure, at least a leading end region of the male screw part and a leading end region of the female screw part have padding parts in which a clearance between the male screw part and the female screw part is smaller than that of the other parts.SELECTED DRAWING: Figure 1
Inventors:
ITO ZEN
KITAZAKI HIROSHI
ASONUMA EISUKE
KITAZAKI HIROSHI
ASONUMA EISUKE
Application Number:
JP2016201700A
Publication Date:
April 19, 2018
Filing Date:
October 13, 2016
Export Citation:
Assignee:
FUTABA IND CO LTD
International Classes:
F16L15/06; F16B7/18; F16B7/20
Domestic Patent References:
| JPS62174493A | 1987-07-31 | |||
| JP3122595U | 2006-06-15 | |||
| JP2015110994A | 2015-06-18 |
Foreign References:
| US2587544A | 1952-02-26 | |||
| US4588213A | 1986-05-13 | |||
| GB799028A | 1958-07-30 |
Attorney, Agent or Firm:
Nagoya International Patent Service Corporation