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:
Aug. 28, 1990
Filed:
Sep. 29, 1988
Edward D Bennett, Pompano Beach, FL (US);
Ace Technology Corporation, Fort Lauderdale, FL (US);
Abstract
An improvement to a stamping press having a blanking punch and die combination comprising a blanking die defining an opening, a cooperating blanking punch dimensioned closely to mate with the opening wherein the die edge defining the opening is radiused to cause metal flow, a stock engaging shedder displaceable within the die opening to engage and clamp stock, and a stripper encircling the blanking punch and displaceable therealong to remove surplus stock after a blanking operation. The improvement comprises the stripper being disposed to engage and clamp stock being punched by the blanking punch and die. Additionally, there is a variable pressure source connected to cause the stripper to engage and clamp the stock during punching of the stock under a pressure low enough to permit the stock to flow away from the blanking punch and high enough to prevent the stock from bending and to cause the stripper to exert sufficient force on the stock following punching of the stock to strip the stock from the blanking punch. The preferred variable pressure source comprises a piston connected between the stripper and a fixed point and a variable pressure source operably connected to the piston. The variable pressure can be set for different types and thicknesses of material.