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:
Nov. 07, 2000
Filed:
Aug. 18, 1998
Harmut Leichnitz, Muhlheim, DE;
Michael Dotzert, Friedrichsdorf, DE;
MAN Roland Druckmaschinen AG, , DE;
Abstract
A lifting device for an automatic pile changing device of a sheet-processing machine, in particular for a sheet-fed offset printing machine with a non-stop feeder, having a main pile-carrying assembly and an auxiliary pile-carrying assembly which can be raised and lowered by means of a motor and an upstream drive unit. The invention allows simple and cost effective synchronization of the main pile-carrying assembly and of the auxiliary pile-carrying assembly within given tolerances. According to the invention, this is achieved by switching signals of equal duration determined by a common control unit coordinating two drive units. At least one of the drive units is assigned parameters that enable this synchronization.