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. 30, 2017
Filed:
Aug. 25, 2016
Siemens Schweiz Ag, Zurich, CH;
Li Guo Chen, Beijing, CN;
Rui Ting Ren, Beijing, CN;
Xue Song Shen, Beijing, CN;
Jian Tan, Beijing, CN;
SIEMENS SCHWEIZ AG, Zurich, CH;
Abstract
A visual notification device in a fire-fighting system may include an input end, a booster circuit, an energy storage element, at least one flash element, and a flash control circuit, for causing energy in the energy storage element to be applied to the at least one flash element to make it flash. At least one of the booster circuit, the at least one flash element, and the flash control circuit is designed such that a residual voltage across the energy storage element in each flash operation is greater than or equal to the input voltage. The visual notification device may enable the occurrence of a repetitive inrush current to be suppressed effectively without the addition of a current-limiting circuit.