Gas spring assembly for a vehicle suspension system
US11225119B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Oct 26, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2500/30
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle has a vehicle body and a vehicle suspension system supporting the vehicle body. The vehicle suspension has a gas spring, and includes a cylinder, a rod, and an accumulator. The cylinder has a longitudinal axis. The rod is partially disposed within the cylinder and is movable relative to the cylinder along the longitudinal axis of the cylinder. The rod and cylinder together at least partially define a chamber having a variable volume that receives a first pressurized gas. The accumulator is in communication with the chamber and contains a second pressurized gas held at a threshold pressure creating a first spring rate opposing relative movement between the rod and cylinder when the first pressurized gas within the chamber is pressurized below the threshold pressure and a second spring rate when the first pressurized gas within the chamber is pressurized above the threshold pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.