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:
Jun. 26, 1990
Filed:
Sep. 26, 1988
Applicant:
Inventors:
Wilfried Ebmeyer, Enger, DE;
Gunter Mattiebe, Bielefeld, DE;
Assignee:
Windmoller & Holscher, Lengerich, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B26F / ;
U.S. Cl.
CPC ...
83628 ; 83213 ; 83543 ; 83859 ; 72452 ; 74 57 ;
Abstract
A punching apparatus, preferably for punching intermittently moving webs of synthetic thermoplastics, comprises top and bottom tools, which are mounted in a machine frame and at least one of which is connected to a drive for moving said one tool up and down. The tools for making the punching cut consist of a knife plate or a knife ring and a backing plate or a backing ring and at the end of the punching cut strike against each other or almost contact each other.