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. 11, 1991
Filed:
Nov. 22, 1989
Applicant:
Inventor:
Kurt Stemmler, Neuweid, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B26D / ; B26F / ; B41F / ;
U.S. Cl.
CPC ...
83 16 ; 83 72 ; 83171 ; 83346 ; 83508 ; 100 / ;
Abstract
There is provided a method and apparatus for maintaining the cutting conditions constant at a rotary punch by bringing the rotary punch to a constant, predetermined temperature and maintaining the rotary punch at that temperature. Tempering elements are included in the rotary punch so as to maintain constant and set the spacing of the cylindrical envelope described by the cutting edge or edges from the opposing tool.