Cylinder sequencing for a dual stage lift system for a snow wing
US12252853B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2022 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Oct 22, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/2228
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In some implementations a lift assembly for a snow wing assembly may include a first lifting mechanism, coupled to the motor grader, configured to lift the snow wing assembly a first portion of a bench height associated with a moldboard via a first hydraulic cylinder. The lift assembly may include a second lifting mechanism, coupled to the first lifting mechanism and the moldboard, configured to lift the moldboard of the snow wing assembly a second portion of the bench height via a second hydraulic cylinder. The lift assembly may include one or more valves included in a hydraulic circuit of the first hydraulic cylinder and the second hydraulic cylinder, configured to divert a flow of hydraulic fluid in the hydraulic circuit away from a first stage hydraulic cylinder and to a second stage hydraulic cylinder, based on a pressure value associated with the first stage hydraulic cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.