Payload lifting device
US11820633B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 2019 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Dec 5, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66F2700/09
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Disclosed is a payload lifting device capable of stably lifting a payload using one lift-driving unit. In the payload lifting device including a lift-driving portion configured to vertically lift a payload, the lift-driving portion includes lift-driving units configured to generate a driving force for vertically lifting the payload, a first power transmission portion including first power transmission members which vary in vertical positions and apply a vertically lifting force to one side of a bottom of the payload when a first rotational shaft rotated by the driving force of the lift-driving units rotates, and a second power transmission portion including second power transmission members which vary in vertical positions and apply a vertical lifting force to the other side of the bottom of the payload when a second rotational shaft rotated by the driving force of the lift-driving units rotates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.