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. 21, 2020
Filed:
Mar. 07, 2019
Otis Elevator Company, Farmington, CT (US);
Amir Lotfi, South Windsor, CT (US);
Randall Keith Roberts, Hebron, CT (US);
Ronnie E. Thebeau, Haddam, CT (US);
Michael Garfinkel, West Hartford, CT (US);
Edward Piedra, Chicopee, MA (US);
Dennis Hanvey, Leonardo, NJ (US);
Daniel Rush, Canton, CT (US);
OTIS ELEVATOR COMPANY, Farmington, CT (US);
Abstract
A method includes determining that an elevator car is arriving at a landing at which re-leveling is anticipated; upon the elevator car arriving at the landing at which re-leveling is anticipated, initiating the at least one of a brake cycling operation and a power cycling operation to reduce elevator car sag at the landing; monitoring transfer of weight to or from the elevator car at the landing over a period of time; terminating the at least one of the brake cycling operation and the power cycling operation upon at least one of (i) the transfer of weight to or from the elevator car at the landing over the period of time being less than a threshold and (ii) the elevator car sag at the landing meeting a sag threshold.