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:
Dec. 20, 2022
Filed:
Feb. 25, 2020
Applicant:
Siemens Mobility, Inc., New York, NY (US);
Inventors:
Quinton Reed, Oil City, PA (US);
Daniel Spencer, Pittsburgh, PA (US);
Assignee:
Siemens Mobility, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 5/04 (2006.01); F01D 21/02 (2006.01); H02K 11/26 (2016.01); F01D 21/00 (2006.01); H01L 29/866 (2006.01); H02P 3/18 (2006.01); H02P 29/10 (2016.01);
U.S. Cl.
CPC ...
F01D 21/02 (2013.01); F01D 21/003 (2013.01); H01L 29/866 (2013.01); H02K 11/26 (2016.01); H02P 3/18 (2013.01); H02P 29/10 (2016.02);
Abstract
Examples described herein provide a method for overspeed protection of a motor of a gate crossing mechanism. The method includes monitoring, by an overspeed protection circuit, a voltage across a first Zener diode and a second Zener diode. An anode of the first Zener diode is connected to an anode of the second Zener diode. The method further includes, responsive to determining that a Zener voltage threshold is exceeded, allowing a current to flow into a gate pin of a triac. The triac controls the motor of the gate crossing mechanism.