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:
Nov. 18, 2025
Filed:
Jan. 28, 2022
Applicant:
Tyco Fire & Security Gmbh, Neuhausen am Rheinfall, CH;
Inventors:
Mattia Lovati, San Stefano, IT;
Christopher J. Merkl, Milwaukee, WI (US);
George J. Dietz, Delafield, WI (US);
Gary A. Romanowich, Slinger, WI (US);
Kevin A. Weiss, Gurnee, IL (US);
Assignee:
Tyco Fire & Security GmbH, Neuhausen am Rheinfall, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/64 (2020.01); G01R 27/26 (2006.01);
U.S. Cl.
CPC ...
G01R 31/64 (2020.01); G01R 27/2605 (2013.01);
Abstract
A method of determining a lifetime parameter of a capacitor in a failsafe device includes measuring an amount of energy required to return the failsafe device to a failsafe position, measuring an effective capacitance of the capacitor, and comparing the amount of energy to the effective capacitance to determine the lifetime parameter of the capacitor.