Title:
MAGNET TYPE DENTURE ATTACHMENT
Document Type and Number:
WIPO Patent Application WO/2023/157663
Kind Code:
A1
Abstract:
[Problem] To form a weld part with excellent weld strength, ensuring high magnetic attraction force and sufficient magnetic shielding, while also simplifing processing. [Solution] A cap 1 houses a permanent magnet 2 and comprises a Cr magnetic stainless steel. A shield plate 3 that is a lid for a recessed opening of the cap 1 comprises an outer edge 32 formed from a non-magnetic part comprising a non-magnetically modified 18Cr-8Ni stainless steel and a part 31 constituting the rest, i.e. other than the outer edge, of the shield plate 3 and comprising a 18Cr-8Ni stainless steel magnet. A weld part is formed by laser welding at the boundary between the cap 1 and the outer edge 32 (non-magnetic part) of the shield plate 3. A keeper 102 comprises a Cr soft magnetic stainless steel, and a Cr diffusion layer is formed on a suction face thereof.
Inventors:
HONKURA YOSHINOBU (JP)
KIKUCHI EIKI (JP)
HONKURA SHINPEI (JP)
KIKUCHI EIKI (JP)
HONKURA SHINPEI (JP)
Application Number:
PCT/JP2023/003398
Publication Date:
August 24, 2023
Filing Date:
February 02, 2023
Export Citation:
Assignee:
MAGNEDESIGN CORP (JP)
International Classes:
A61C8/00; A61C13/235
Domestic Patent References:
| WO2015151845A1 | 2015-10-08 |
Foreign References:
| JPS63122449A | 1988-05-26 | |||
| US5123843A | 1992-06-23 | |||
| JPH10179611A | 1998-07-07 | |||
| JPH11309592A | 1999-11-09 | |||
| JP2001321393A | 2001-11-20 | |||
| JP2001112784A | 2001-04-24 | |||
| JP2021063242A | 2021-04-22 |
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