Title:
ROD BODY AND CYLINDRICAL BODY
Document Type and Number:
WIPO Patent Application WO/2021/132237
Kind Code:
A1
Abstract:
This rod body includes: radially-contracted surfaces that are formed with the radius from the axis being gradually reduced; radially-expanded surfaces that have a relatively large diameter and are formed from outer peripheries of protruding sections that are provided in a row in the axial direction; and radially-recessed surfaces that are formed from the bottom surfaces of recessed sections that are disposed alternatingly with the protruding sections by being recessed toward the axial direction. The radially-expanded surfaces and the radially-recessed surfaces are continuously disposed along the circumferential direction with respect to the radially-contracted surfaces. The protruding sections extend, continuously or intermittently, in a substantially arc shape, toward the circumferential direction, each including a reduced width section in which the width is reduced from the radially-expanded surface side toward the radially-contracted surface side.
Inventors:
MICHIWAKI HIROSHI (JP)
Application Number:
PCT/JP2020/047935
Publication Date:
July 01, 2021
Filing Date:
December 22, 2020
Export Citation:
Assignee:
NEXT INNOVATION INC (JP)
International Classes:
E04C5/03; E04C5/18; E04G21/12
Foreign References:
| JPS5132011A | 1976-03-18 | |||
| JPH0734663A | 1995-02-03 | |||
| JP2017025506A | 2017-02-02 | |||
| JP2009002076A | 2009-01-08 | |||
| JP2014020025A | 2014-02-03 | |||
| JP2011001764A | 2011-01-06 | |||
| US20120195681A1 | 2012-08-02 |
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