Hitachi Metals, Ltd.

Osamu Okuno

Hiroya Suzuki

Kiyotaka Yamauchi

Minoru Ai

Yohsuke Kinouchi

Kazumi Noguchi

Hiroshi Mizutani

Kiyomi Tanaka

Toru Sugihara

Akira Yamataka

Permanent magnet assembly, keeper and magnetic attachment for denture

A permanent magnet assembly for stably fixing a denture comprising a permanent magnet, a casing made of a corrosion-resistant, magnetic material having a cavity for receiving the permanent magnet, and a seal plate for covering an opening of the casing to prevent the permanent magnet from exposing outside, the seal plate consisting of a seal ring member made of a corrosion-resistant, non-magnetic material and a disc plate made of a corrosion-resistant, soft-magnetic material and having substantially the same outer diameter as the inner diameter of the seal ring member, the seal ring member and the disc plate being concentrically arranged in the same plane, the disc plate being welded to the seal ring member in their abutment, and the seal ring member being welded to the casing. Laser welding is utilized.

Permanent magnet assembly for stably fixing denture

Growing community of inventors

Tokyo, Japan

Osamu Okuno