Payload transportation device
US11904461B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 2020 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Aug 24, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66F9/205
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Disclosed is a payload transportation device for transporting a payload, which has a low height and in which driving wheels are configured to come into constant contact with a ground surface even when the ground surface is uneven. The payload transportation device includes a loading plate above which a payload is loaded, a lift-driving portion configured to generate a driving force to vertically lift the loading plate, a first assembly configured to support a bottom of one side of the loading plate and in which some components included in the lift-driving portion are provided, a second assembly configured to support a bottom of the other side of the loading plate and in which other components included in the lift-driving portion are provided, hinge portions configured to connect the first assembly to the second assembly in a hinge structure, at least a pair of driving wheels coupled to both sides of a bottom of any one of the first assembly and the second assembly, and a driving unit configured to rotate the driving wheels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.