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:
Feb. 22, 1977
Filed:
Aug. 25, 1975
Applicant:
Inventors:
Leonardus Vos, Eindhoven, NL;
Joannes Theodorus VAN DER Sanden, Eindhoven, NL;
Adrianus Johannes Van Mensvoort, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
72 38 ; 72385 ; 72463 ;
Abstract
A device for zigzag folding of strip material and the like by means of two dies, the facing sides of which are provided with teeth. Each of the dies is provided with ducts which open into the toothed die face. During operation, the two duct systems are alternately connected to a source of a pressure, either higher or lower than atmospheric pressure, in order to keep the material alternately against one of the two toothed die faces during open die positions.