UNEQUALLY THICK RIM, AND METHOD OF MANUFACTURING THE RIM

Title:

UNEQUALLY THICK RIM, AND METHOD OF MANUFACTURING THE RIM

Document Type and Number:

WIPO Patent Application WO/2004/067294

Kind Code:

A1

Abstract:

A rim material (11) for an unequally thick rim, an unequally thick rim (12) manufactured by using the rim material (11), and a method of manufacturing the rim (12) by using the rim material (11), the rim material (11) comprising first material portions forming axial R parts after the rim is formed and second material portions forming portions between the adjacent axial R parts after the rim is formed, wherein parallel parts (13) thick in wall thickness and having front and rear surfaces parallel with each other are formed in the first material portions, the widths of the parallel parts are assured wider than the maximum displacement amount of the corresponding R parts in the axial direction of the rim when the rim is formed, plate thickness change parts (14) are formed in the second material portions, and the surfaces of the plate thickness change parts are formed in a linear or a gentle curved shape.

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Inventors:

ABE KISHIRO (JP)
WATANABE TSUNEO (JP)
MIYASHITA SATORU (JP)
HASEGAWA TAKENOBU (JP)
INADA KENICHI (JP)
YOKOMIZO SHOJIRO (JP)
TSUKUI SHINGO (JP)
KATO KATSUKI (JP)
KUNO MORISHI (JP)
TODOKO KATSUNORI (JP)
HAYASHI KENJI (JP)
SOMA NOBUYUKI (JP)
HARA MASAAKI (JP)

Application Number:

PCT/JP2003/016019

Publication Date:

August 12, 2004

Filing Date:

December 15, 2003

Export Citation:

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Assignee:

TOPY IND (JP)
ABE KISHIRO (JP)
WATANABE TSUNEO (JP)
MIYASHITA SATORU (JP)
HASEGAWA TAKENOBU (JP)
INADA KENICHI (JP)
YOKOMIZO SHOJIRO (JP)
TSUKUI SHINGO (JP)
KATO KATSUKI (JP)
KUNO MORISHI (JP)
TODOKO KATSUNORI (JP)
HAYASHI KENJI (JP)
SOMA NOBUYUKI (JP)
HARA MASAAKI (JP)

International Classes:

B21D53/30; B21H1/04; B60B21/02; B60B21/00; (IPC1-7): B60B21/02; B21D53/30

Domestic Patent References:

WO1996025257A1

1996-08-22

Foreign References:

JPH07155882A	1995-06-20
JPS2951B1
JPH02123327U	1990-10-11
JPS5775297A	1982-05-11
JPS632801B2	1988-01-20
JPH0891005A	1996-04-09
JPH0299401A	1990-04-11
JPS5317563A	1978-02-17
US5579578A	1996-12-03
JPH0891005A	1996-04-09

Other References: