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:
Jul. 18, 2006
Filed:
Oct. 08, 2002
Jae-hyuk OH, Tolland, CT (US);
Alan M. Finn, Hebron, CT (US);
Pei-yuan Peng, Manchester, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An elevator system () includes wireless communicating portions () that communicate with each other to provide elevator cab () position information within a hoistway (). In one example, a first communicating portion () is supported on the elevator cab () that generates a radio frequency trigger signal () that is received by a second communicating portion () at a selected position along the hoistway (). The second communicating portion () responsively generates an ultrasound signal () that is received by the first communicating portion (). A characteristic of the received locating signal, such as the timing between the trigger signal and the receipt of the locating signal, provides position information regarding the cab within the hoistway.