Lift axle suspension system for a heavy-duty vehicle, which suspension system uses X-rod control arms for improved lateral stability
US11794545B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Mar 29, 2022 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Mar 29, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D61/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A suspension system for liftable steerable axles has at least one steering knuckle; at least one pistonless bellows air spring actuator (ie., damper air spring); and a steering axle structure that has, at each end, a kingpin housing boss, a kingpin fixed into the kingpin boss, and a pair of steering knuckles that rotate around the kingpin and are supported by the kingpin housing; wherein the steering knuckles are connected at the bottom of each other side to side by a tie rod assembly that respond to each others rotational inputs. The lift axle suspension system further has x-rod control arms (or that is, the respective upper and lower control arms of each side are relatively X-configured or X-disposed relative each other) for improved lateral stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.