Magnet controller for controlling a lifting magnet
US8491025B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2008 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Oct 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/206
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for operating an electric crane, comprises the steps of activating a magnet controller to cause a current to flow through a magnet for creating a magnetic field about the magnet for securing a load to the magnet, receiving a feedback input value at a logic controller from a device associated with the electric crane, in response to the received feedback input value at the logic controller, receiving a command value at the magnet controller from the logic controller, and in response to the received command value at the magnet controller, modifying the current flow from the magnet controller to the magnet to change the magnetic field about the magnet. A system is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.