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. 15, 2011
Filed:
Aug. 24, 2005
Vijay Jayachandran, West Hartford, CT (US);
Vijay Jayachandran, West Hartford, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
A method of controlling noise noticeable within an elevator car () includes intentionally introducing noise into the elevator car () at a noise level that depends on the position of the car within a hoistway (). A disclosed example includes using existing elevator system components for generating compensating noise at different levels corresponding to different positions of the car within the hoistway. One disclosed example includes increasing introduced noise as the car descends further away from a machine responsible for moving the car. The introduced noise reduces or eliminates changes in noticeable noise within the elevator car as the car moves relative to the machine. The disclosed examples have particular usefulness in machine roomless elevator systems although they are not necessarily limited to such systems.