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. 12, 2021
Filed:
May. 08, 2018
Otis Elevator Company, Farmington, CT (US);
Marcin Wroblewski, Burlington, CT (US);
OTIS ELEVATOR COMPANY, Farmington, CT (US);
Abstract
An elevator system is provided and includes at least one guide rail, safeties to respectively selectively impede or permit movement of an elevator car along a corresponding guide rail and first and second electronic safety actuators (ESAs) respectively coupled to a corresponding safety. The first ESA includes a first braking surface located a first distance from the corresponding guide rail, the second ESA includes a second braking surface located a second distance from the corresponding guide rail and the first and second braking surfaces are deployable across the first and second distances, respectively, to contact the corresponding guide rails. The elevator system further includes a sensing system to determine the first and second distances and a control system to deploy the first and second braking surfaces toward the corresponding guide rails in response to an over-speed or an over-acceleration condition with synchronization based on the first and second distances.