Transportation device comprising a safety device for limiting deceleration
US10968079B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2017 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Sep 26, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A transportation device such as an elevator installation, an escalator, or a moving walkway may comprise a person conveying unit and an electromagnetic linear drive for driving the person conveying unit. The electromagnetic linear drive may include a stator segment and a runner element. The runner element can be driven by the force of an electromagnetic field of the stator segment in a first drive direction or in an opposite second drive direction. The runner element is movably mounted on the person conveying unit such that a magnetic resistance in an air gap between the stator segment and the runner element is adjustable depending on a drive force acting between the stator segment and the runner element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.