Semi-trailer landing gear actuator
US11014541B2 · kind B2 · utility
1Cited by
23References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2019 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Jul 4, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Y2200/148
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A semi-trailer landing gear assembly can include a set of legs actuable to raise and lower a semi-trailer. Each leg can include a foot abutting the ground and a support abutting the semi-trailer. A rotatable shaft couples to the set of legs where rotation of the rotatable shaft raises and lowers the legs. A crank can operably couple to the rotatable shaft to rotate the rotatable shaft. At least two air drivers operably couple to the crank to rotate the crank in an opposing manner such that at least one air driver is always offset from the direction of rotation to provide continuous torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.