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:
Mar. 16, 2021
Filed:
Oct. 16, 2019
Applicant:
Gentex Corporation, Zeeland, MI (US);
Inventor:
Todd R. Witkowski, Zeeland, MI (US);
Assignee:
GENTEX CORPORATION, Zeeland, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G08B 21/00 (2006.01); G08B 21/18 (2006.01); G08B 7/06 (2006.01); E05F 15/60 (2015.01);
U.S. Cl.
CPC ...
G08B 21/182 (2013.01); E05F 15/60 (2015.01); G08B 7/06 (2013.01); E05Y 2900/106 (2013.01);
Abstract
A system for detecting broken springs in overhead doors having automatic door openers includes an automatic door opener having a motor, a sensor configured to monitor performance of the motor in the door opener, and a processor in communication with the sensor. The processor is configured to compare the motor performance with a predetermined threshold level and send an alert when motor performance exceeds the predetermined threshold level.