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:
Apr. 23, 2013
Filed:
Aug. 02, 2011
Paul A. Stucky, Stockton, CA (US);
Michael A. Kryzman, West Hartford, CT (US);
William A. Veronesi, Hartford, CT (US);
Paul A. Stucky, Stockton, CA (US);
Michael A. Kryzman, West Hartford, CT (US);
William A. Veronesi, Hartford, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An elevator load bearing member () monitoring device includes a controller () that applies a selected electrical signal to tension members () of the load bearing member (). In one example, connectors () are associated with ends of the load bearing member () to establish an electrical interface between the controller () and the tension members (). The connectors () facilitate establishing electrical circuit loops along the tension members () such that only non-adjacent tension members are energized at a selected time. A variety of circuit configurations are disclosed. The applied electrical signal in one example has a potential that is negative compared to a ground potential of a hoistway in which the elevator belt is used. In another example, the electrical signal comprises a plurality of pulses and has a duty cycle that is on the order of about one percent.