Title:
不等厚リムの製造方法
Document Type and Number:
Japanese Patent JP4053437
Kind Code:
B2
Abstract:
A rim material (11) having a non-uniform thickness, a rim (12) manufactured from the rim material (11), and a method for manufacturing the rim (12) from the rim material (11). The rim material (11) includes a first material portion which forms an axially curved portion of the rim after the rim material is formed to the rim and a second material portion which forms an intermediate portion between adjacent axially curved portions after the rim material is formed to the rim. The first material portion has a thick parallel-surface portion (13) including opposite surfaces parallel to each other. The parallel-surface portion (13) has a width greater than a maximum amount of an axial dislocation of the parallel-surface portion expected to occur when the parallel-surface portion is formed to a corresponding curved portion. The second material portion has a thickness varying portion (14). The thickness varying portion (14) includes a surface having a configuration defined by a line including a straight line and/or a slightly curved line.
Inventors:
Kishiro Abe
Tsuneo Watanabe
Satoru Miyashita
Takehisa Hasegawa
Tosatsu Katsunori
Kenji Hayashi
Nobuyuki Soma
Masaaki Hara
Tsuneo Watanabe
Satoru Miyashita
Takehisa Hasegawa
Tosatsu Katsunori
Kenji Hayashi
Nobuyuki Soma
Masaaki Hara
Application Number:
JP2003019694A
Publication Date:
February 27, 2008
Filing Date:
January 29, 2003
Export Citation:
Assignee:
Topy Industries, Ltd.
International Classes:
B60B21/00; B21D53/30; B21H1/04; B60B21/02
Domestic Patent References:
| JP7155882A | ||||
| JP891005A | ||||
| JP1159107A |
Attorney, Agent or Firm:
Keio Tabuchi