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. 29, 1976
Filed:
Mar. 13, 1975
Rudi Riedl, Leipzig, DT;
Regina Jungnickel, Leipzig, DT;
Rainer Nitsch, Leipzig, DT;
Werner Lein, Radebeul, DT;
Lothar Vetter, Radebeul, DT;
Helmut Schone, Radebeul, DT;
Gunter Weisbach, Radebeul, DT;
Hans Johne, Radebeul, DT;
Alfred Schott, Radebuel, DT;
Karl-Heinz Forster, Dresden, DT;
Albrecht Johne, Dresden, DT;
Abstract
A printing machine receives single sheets which are removed from a stack by the suction cups of a feeding mechanism which is combined with a monitoring unit serving to detect the absence of sheets at the undersides of suction cups or the lifting of two or more sheets. The monitoring unit employs a transducer having two feelers which determine the thickness of lifted sheet material and an indicating device which is actuated by the feelers and produces signals serving to indicate the absence of sheets, the lifting of two or more sheets and/or to control the operation of the printing machine. The suction cups can form part of the transducer when the latter is designed to detect only the absence of sheets or they form part of a second transducer which is provided in addition to the first mentioned transducer.