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:
Oct. 26, 2004
Filed:
Jan. 31, 2003
Applicant:
Inventors:
Rolf Dickhoff, Kirchheim, DE;
Winfried Gräf, Esslingen am Neckar, DE;
Assignee:
Pilz GmbH & Co., Ostfildern, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 9/00 ;
U.S. Cl.
CPC ...
H02H 9/00 ;
Abstract
The present invention relates to a safety switching device for safely switching off an electrical load such as an electrically driven machine. The safety switching device has a failsafe disconnection unit and a non-failsafe signaling unit, both of which are supplied with an external control signal. The disconnection unit fail-safely switches off the electrical load as a function of the control signal but with a first delay. The signaling unit produces an external reporting signal as a function of the control signal in a non-delayed and non-failsafe manner.