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:
Jul. 03, 2007
Filed:
Mar. 12, 2004
Applicants:
Gerhard Ehrlich, Reichenbach, DE;
Richard Veil, Stuttgart, DE;
Thomas Peter, Reichenbach, DE;
Inventors:
Assignee:
Pilz GmbH & Co., Ostfildern, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A safety switching apparatus for safely disconnecting an electrical load, such as an electrical machine, has at least one output switch with at least two switching positions. The output switch is for interrupting an external power supply path to the load. The safety switching apparatus further has a control unit which controls the switching position of the output switch. The control unit is capable of monitoring the actual switching position of the output switch by means of an RF test signal which is transmitted from an RF generator to the output switch.