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:
Feb. 03, 2004
Filed:
Apr. 03, 2003
Paul A. Stucky, Vernon, CT (US);
Neil R. Baldwin, Manchester, CT (US);
Otis Elevator Co., Farmington, CT (US);
Abstract
An elevator load bearing assembly, such as a polymer cord, reinforced belt, includes at least one element of a ferromagnetic material associated with each cord that comprises one or more non-ferromagnetic materials. The ferromagnetic element is associated with the cord such that a physical characteristic of the ferromagnetic element changes responsive to strain on the non-ferromagnetic fibers. In one example, the ferromagnetic element is a steel wire that breaks in areas that are strained, caused by bending fatigue, for example. Detecting a number of changes (i.e., breaks) in the ferromagnetic element along the length of the load bearing assembly provides an indication of the belt condition.