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:
Aug. 03, 2010
Filed:
Jan. 25, 2008
Klaus Pirkl, Büttelborn, DE;
Klaus Pirkl, Büttelborn, DE;
Sick AG, Waldkirch, DE;
Abstract
Monitoring is provided, for a passageway through which objects on carrier () are transported, such that the passageway is guarded by at least one light grid () with a plurality of light rays running one above the other, where the light grid () is divided into a first, lower area () through which the carriers () pass and a second, upper area () through which the objects pass, which light grid () disposes over an evaluating circuit which emits a signal if a light ray () is interrupted in the first, lower area () and provides information on the height of the object. A current value for the height is stored height as last measured value. Readouts are taken of a lower area () and upper area () of the light grid (), and the readouts are used to determine a current value for the height of the object, and a determination is made whether an object flag has been changed.