| 摘要 |
<p>A metallic band plate (1) is coiled into a ring shape with its wider surface (1b) directed radially, and ends of the band plate (1) are joined to each other by means of a joint (17) comprising a recessed portion (17a) and a protruded portion (17b) fitted to each other and engaging with each other against a separating force in a circumferential direction. The thin-walled ring-shaped member is formed at its inner periphery with teeth, which mesh with a gear of a transmission, to form a friction plate (41). Accordingly, it is possible to lessen or eliminate a loss of a material and reduce a working cost.</p> |
