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.
Patent No.:
Date of Patent:
Jul. 18, 1989
Filed:
Oct. 16, 1987
Applicant:
Inventors:
Assignees:
Topy Kogyo Kabushiki Kaisha, Tokyo, JP;
Watanabe Tekko Kabushiki Kaisha, Fukuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
72105 ; 72455 ;
Abstract
A wheel rim forming machine including a fixed frame having four vertically extending columns. Due to the frame structure, the forming force acting at the top and bottom rolls of the machine are borne evenly through tensile forces acting in the four columns. Thus, no bending deformation occurs in the columns. Further, because the columns are not exposed to bending forces, they can be formed with a relatively small cross-section and thus the frame structure is compact. Therefore, access to the guide rolls and their support structure is facilitated and high grade adjustment of the guide rolls is possible.