Electronic safety actuator electromagnetic guidance
US11345570B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2019 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Mar 14, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B11/028
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator car is provided and includes a car frame which translates along a guide rail during ascents or descents, a safety disposed along the car frame to selectively engage with the guide rail to selectively permit vertical elevator car movement, an electronic safety actuator (ESA) and a control system. The ESA actuates the safety and includes an ESA body secured to the car frame with horizontal maneuverability and defining a groove through which the guide rail translates during the vertical elevator car movement, a magnetic guide operably disposed within the groove to exert magnetic force on the guide rail and a sensor disposed within the groove to sense horizontal distance between the guide rail and corresponding portions of the ESA body. The control system controls the magnetic guide to exert a magnetic force in accordance with reading of the sensor to maneuver the ESA body horizontally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.