Pistonless pneumatic dampening and straight centering for a steerable axle of a heavy-duty vehicle
US11712938B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Mar 3, 2021 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | Oct 14, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2300/402
- 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; and further having the damper air spring being connected to the steering knuckle so that, given a supplied pneumatic air force, the damper air spring stabilizes and dampens the steering road inputs when in motion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.