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:
Dec. 30, 2014
Filed:
Jun. 28, 2011
Shinji Kinoshita, Tokyo, JP;
Shinji Kinoshita, Tokyo, JP;
Yourbusiness Co., Ltd., Tokyo, JP;
Abstract
A press working die assembly includes a pad secured to an upper die holder so as to be movable upward and downward, a machining slide cam slidable laterally along a cam surface and having a bending edge at one end thereof, a rotatable rotary cam having a bending portion for forming a negative angle portion of a workpiece, and a reciprocating driving apparatus configured to rotate the rotary cam to a workpiece machining position. The reciprocating driving apparatus includes a slide block having a cam surface for rotating the rotary cam in a predetermined direction on an front end side and a rotation impelling surface configured to rotate the rotary cam back to its original position, and a restoring action block configured to come into abutment with the rotation impelling surface of the slide block when the slide block retracts to restore the rotary cam to its original position.