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. 02, 2021
Filed:
Feb. 04, 2016
Otis Elevator Company, Farmington, CT (US);
Shashank Krishnamurthy, Glastonbury, CT (US);
Vladimir Blasko, Avon, CT (US);
Enrico Manes, Feeding Hills, MA (US);
OTIS ELEVATOR COMPANY, Farmington, CT (US);
Abstract
A ropeless elevator systemincludes a lane. One or more carsare arranged in the lane. At least one linear motoris arranged along one of the lane and the one or more cars, and a magnetis arranged along the other of the lane and the one or more cars. The at least one magnet is responsive to the at least one linear motor. A linear motor controlleris operatively connected to the at least one linear motor, and a lane controlleris operatively connected to the linear motor controller. A back electro-motive force (EMF) moduleis operatively connected to at least one of the linear motor controller and the lane controller. The lane controller being configured and disposed to control stopping one of the one or more cars based on a back EMF signal from the at least one linear motor determined by the EMF module.