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:
Jan. 27, 2015
Filed:
Mar. 16, 2009
Greg A. Schienda, Plantsville, CT (US);
Daryl J. Marvin, Farmington, CT (US);
Harold Terry, Avon, CT (US);
James M. Draper, East Hartland, CT (US);
Anthony Cooney, Unionville, CT (US);
Jose M. Carballo, Tampa, FL (US);
Greg A. Schienda, Plantsville, CT (US);
Daryl J. Marvin, Farmington, CT (US);
Harold Terry, Avon, CT (US);
James M. Draper, East Hartland, CT (US);
Anthony Cooney, Unionville, CT (US);
Jose M. Carballo, Tampa, FL (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An elevator system includes an electronic system capable of triggering a machine room brake and an electromagnetic safety trigger with low hysteresis and with minimal power requirements that can be released to engage safeties, when car over-speed and/or over-acceleration is detected. The electromagnetic trigger may be reset automatically and may be released to engage the safeties, during the reset procedure. The system includes a processing system that is configured to decrease response time and to reduce the occurrence of false triggers caused by conditions unrelated to passenger safety, such as passengers jumping inside the elevator car.