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:
May. 24, 2011
Filed:
Oct. 16, 2006
Jürgen Pullmann, Ebersbach, DE;
Christoph Zinser, Wolfschlugen, DE;
Günter Hornung, Leinfelden-Echterdingen, DE;
Jürgen Fleiner, Reutlingen, DE;
Jürgen Pullmann, Ebersbach, DE;
Christoph Zinser, Wolfschlugen, DE;
Günter Hornung, Leinfelden-Echterdingen, DE;
Jürgen Fleiner, Reutlingen, DE;
Pilz GmbH & Co. KG, Ostfildern, DE;
Abstract
A signaling device for a safety circuit has an input part for receiving an external state variable, at least one switching element and a control part. The control part controls the at least one switching element as a function of the external state variable, such that a signal applied to the input is communicated to the output. According to one aspect of the invention, the input of the switching element is internally connected to a fixed potential, preferably a fixed High potential. In a safety circuit for turning off a hazardous installation, such signaling devices are connected in series with one another to a safety controller. In such an arrangement, the control part of the downstream second signaling device also controls its switching elements as a function of the output of the first signaling device.