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:
Mar. 22, 1988
Filed:
Mar. 24, 1987
Applicant:
Inventor:
Tsuneo Kogure, Hatano, JP;
Assignee:
Amada Company, Limited, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
72389 ; 77446 ; 100 46 ;
Abstract
To crown (deform into a convex state) a die for a press brake (bending press), a number of a pair of upper and lower wedges are arranged between the lower die and the lower table at intervals along the longitudinal direction of the press brake, and simultaneously moved in the lateral direction by an elastic member (plate spring) fitted to each bottom groove formed in the lower wedge. Both free ends of the elastic member is moved by elastic member adjusting means including two sprocket wheels, two tubular nut members, a control motor, etc. To provide a smooth wedge slidable motion, springs are disposed to urge the lower die upward together with a lower die base.