Overspeed safety mechanism for lift car
US11535492B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2020 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Dec 27, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B11/0423
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An overspeed safety braking mechanism for lift cars and elevator systems is described herein. The safety mechanism may comprise a safety kit secured to an overhead portion of a lift car, and configured to engage a cable to prevent a downward movement of the lift car. Engagement of the cable may occur when a threshold speed is reached. The overhead portion of the lift car is detachable upon a predetermined upward force resulting from an engagement of the safety cable from the safety kit. A primary brake system may be positioned beneath the safety kit, on or near a lift platform, configured to engage the safety cable in response to an activation of the safety kit and a detection of the threshold speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.