Air bag system for lifting trailer platforms
US10611287B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 16, 2018 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Jun 16, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The application discloses integrated air suspension and platform lifting systems that utilize an existing air supply for lifting one or more platforms installed in a trailer or hauling vehicle. An apparatus for lifting a rear gate or platform of a trailer or a hauling vehicle is disclosed that includes an actuating mechanism operable to pivot the platform between a lowered position (e.g., where the end of the platform is in contact with the ground) and a range of raised positions (e.g., where the platform is raised to meet an elevated platform such as a loading dock). The lifting mechanisms for raising and lowering the platform(s) may utilize a pressurized gas supply from a compressor. In some embodiments, the lifting mechanism may be supplied with pressurized air from a compressor of a brake system of a tractor. In some embodiments a separate locking mechanism is provided to hold the platform in place after the lifting system has moved it into a desired position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.