THIN-WALLED RING-SHAPED MEMBER AND METHOD OF MANUFACTURING SAME

Title:

THIN-WALLED RING-SHAPED MEMBER AND METHOD OF MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/1998/051939

Kind Code:

A1

Abstract:

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.

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Inventors:

TERATOKO KEIICHIRO (JP)
KATAOKA KAZUO (JP)

Application Number:

PCT/JP1998/002083

Publication Date:

November 19, 1998

Filing Date:

May 11, 1998

Export Citation:

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Assignee:

SUNCALL CORP (JP)
TERATOKO KEIICHIRO (JP)
KATAOKA KAZUO (JP)

International Classes:

B21D39/02; B21D53/16; B21F37/00; B21K1/30; B21K1/76; B23P15/00; F16D13/64; (IPC1-7): F16D13/64; F16D65/12; F16B5/00; F16B11/00; B21D39/03

Foreign References:

JPS6399041U	1988-06-27
JPS622011A	1987-01-08
JPS5229464A	1977-03-05

Attorney, Agent or Firm:

Ehara, Syogo (Osaka Shoko Building 15-26, Edobori 1-chome, Nishi-k, Osaka-shi Osaka, JP)

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