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:
Jan. 28, 2003
Filed:
Oct. 13, 1999
Carl Conrad Maeder, Hinwil, CH;
Markus Scheuber, Weisslingen, CH;
Ferag AG, Hinwil, CH;
Abstract
A static charge is produced on surfaces of superimposed, flat articles ( ) by passing the superimposed articles ( ) through an electric d.c. voltage field that is oriented substantially perpendicular to the principal surfaces of the articles. Due to the charging, electric forces of attraction between the surfaces of the articles increase the mutual adhesion of the flat articles. The effect of the static charging is reduced or prevented for at least one of two surfaces participating at a predetermined separation point, by treating the surface beforehand with an anti-static agent ( ). Due to the anti-static agent there is little or no charge concentration on the surface such that there is little or no increase in adhesion at the separation point. Thus, at the separation point it is possible to displace the articles against one another with much smaller force expenditure than is required to displace the articles at non-separation points. The method is particularly suitable for opening multipage printed products between two predetermined pages.