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. 11, 1986
Filed:
May. 15, 1984
Applicant:
Inventors:
Alfredo J Vercillo, Harwood Heights, IL (US);
Roger M Scharer, Des Plaines, IL (US);
Assignee:
General Binding Corporation, Northbrook, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B26F / ;
U.S. Cl.
CPC ...
83399 ; 83 62 ; 83522 ; 83526 ; 234 33 ;
Abstract
A power sheet punching apparatus is provided in which a reversing drive operates initially to drive punches through a stack of sheets and thereafter to reverse direction of the drive to withdraw the punches from the sheets. Should the drive be insufficient to drive the punches through the sheets and a jam occurs, an automatic timer operates to thereafter stop the drive and reverse the drive to withdraw the punches from the sheets, thereby providing an automatic non-jamming punch mechanism.