Load-lifting apparatus and method of storing energy for the same
US7554278B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2007 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Dec 25, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T30/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A load-lifting apparatus has one or more prime power sources, one or more energy storage systems and regenerative braking. Regenerative energy is recovered when the load-lifting apparatus lowers its load. The elements of the prime power sources, energy storage devices and electrical components may be distributed to provide stability for the load-lifting apparatus. The general power architecture and energy recovery method can be applied to cranes, rubber-tired gantry cranes, overhead cranes, mobile cranes, ship-to-shore cranes, container cranes, rail-mounted gantry cranes, straddle carrier cranes and elevators. In such an architecture, the energy storage system helps alleviate the power rating requirement of the prime power source with respect to the peak power requirement for lifting a load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.