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Title:
THREADED FASTENER, AND FUNCTION ADDITION MEMBER OF THREADED FASTENER
Document Type and Number:
WIPO Patent Application WO/2022/254739
Kind Code:
A1
Abstract:
Provided is a threaded fastener that can prevent a function addition member from being damaged during tightening, and maintains a satisfactory function of the function addition member, and a fastened state.　A threaded fastener comprising: a fastener body 10; a threaded portion 13 for tightening the fastener body 10 with respect to a member 200 to be fastened; a flange portion 14 provided on the fastener body 10; and a seal function addition member 20 (function addition member) provided on the flange portion 14, wherein, during tightening, the seal function addition member 20 contacts the member to be fastened. The threaded fastener is characterized in that the seal function addition member 20 has at least two-layer structure comprising a slide portion 22 (first addition portion) that contacts the flange portion 14, and a seal portion 21 (second addition portion) that contacts the member 200 to be fastened.

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Inventors:
MATSUEDA YOUICHI (JP)
Application Number:
PCT/JP2021/034042
Publication Date:
December 08, 2022
Filing Date:
September 16, 2021
Export Citation:
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Assignee:
TOPURA KK (JP)
International Classes:
F16J15/10
Domestic Patent References:
WO2008010523A12008-01-24
WO2008066031A12008-06-05
Foreign References:
US5906463A1999-05-25
JP5145226B22013-02-13
JP5276447B22013-08-28
Attorney, Agent or Firm:
IP FIRM SHUWA (JP)
Download PDF:
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