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:
Sep. 18, 2001
Filed:
Jun. 18, 1999
Applicant:
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B31B 1/26 ;
U.S. Cl.
CPC ...
B31B 1/26 ;
Abstract
An apparatus and method for producing a zig-zag folded filter element from a web of material (,), which is supplied through a feeding device to a stamping unit (,). To define the folding line, the stamping unit is fitted with an anvil roll (,) and a stamping die (,), the stamping unit being ultrasound activated and thereby improving the stamping operation.