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:
Jun. 06, 2017
Filed:
Aug. 21, 2015
Applicant:
Tyco Fire & Security Gmbh, Neuhausen am Rheinfall, CH;
Inventors:
Assignee:
Tyco Fire & Security GmbH, Neuhausen am Rheinfall, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 4/00 (2006.01); H02H 3/24 (2006.01); G08B 25/04 (2006.01); G08B 26/00 (2006.01); G08B 29/04 (2006.01); G08B 29/06 (2006.01); G08B 5/36 (2006.01); G08C 23/04 (2006.01); H02H 7/20 (2006.01);
U.S. Cl.
CPC ...
H02H 3/24 (2013.01); G08B 5/36 (2013.01); G08B 25/045 (2013.01); G08B 26/005 (2013.01); G08B 29/04 (2013.01); G08B 29/043 (2013.01); G08B 29/06 (2013.01); G08C 23/04 (2013.01); H02H 7/20 (2013.01); H02J 4/00 (2013.01);
Abstract
An isolator circuit () for a unit of a safety system () includes a power control line () connectable to a first loop of a safety system and a power connection () connectable to a second loop of the safety system. A switch () is connected to the power control line (), and the switch has a closed configuration and an open configuration. A controller () controls the configuration of the switch (). If a voltage across the circuit () from the power connection () to the power control line () falls below a predetermined level, the controller () opens the switch (), thereby causing a disconnection to occur in the first loop.