Topy Kogyo Kabushiki Kaisha

Masaru Kobayashi

Akira Suzuki

Yukio Koseki

Toshiharu Hosoda

A two-piece steel wheel includes a disk and a rim. At an inboard surface, the disk has a machined surface from an end of a radially outer portion of the disk to a position radially inwardly spaced away from an inside surface of a rim bead seat of the rim. The machined surface is connected via a curved surface to a non-machined surface of a radially inner portion of the disk. The rim bead seat is abutted to the machined surface of the radially outer portion of the disk and welded with the disk. A sealant is coated to the corner of the rim bead set and the disk from an inside of the rim.

Growing community of inventors

Kangawa-ken, Japan

Masaru Kobayashi