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.

Date of Patent:
Feb. 26, 2002

Filed:

Jul. 05, 2000
Applicant:
Inventors:

Tobias Müller, Hirschberg, DE;

Thomas Wolf, Karlsruhe, DE;

Assignee:

Heidelberger Druckmaschinen, Heidelberg, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H 7/02 ; B65H 1/16 ;
U.S. Cl.
CPC ...
B65H 7/02 ; B65H 1/16 ;
Abstract

A device for measuring the height of a sheet pile by using a reflectively operating radiation detector, a sheet separating device and a device for conveying separated sheets to a printing machine being assigned to the pile, comprising a system for measuring the propagation time of a radiation pulse originating from a radiation source and reflected at a sheet surface, the amplitude of the pulse being within a predefined range and lower than the amplitude of the reflection of the same radiation pulse at the surface of the sheet located closest to the radiation source, the radiation detector being connected to the measuring system.


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