The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 11, 2003

Filed:

Jun. 12, 2002
Applicant:
Inventors:

Akio Handa, Saitama, JP;

Hideo Yanai, Saitama, JP;

Bunzo Seki, Saitama, JP;

Atsuko Yamaguchi, Saitama, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60B 2/100 ; B60C 2/500 ;
U.S. Cl.
CPC ...
B60B 2/100 ; B60C 2/500 ;
Abstract

A large-diameter part, the diameter of which is larger than the diameter in the center, is provided at the edges of a rim via parts having a difference in a level. Curled parts are provided on both edges of the rim by curling the large-diameter part. Each end face of the curled parts is touched to the parts having a difference in a level. The rigidity of the side of the edge of the rim can be enhanced by providing the parts having a difference in a level to the rim. As a result, the rigidity of the whole wheel can be enhanced and in addition, as a disc and the rim are not required to be thickened, the weight of the wheel can be prevented from being increased.


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