Hydraulic system and methods for an earthmoving machine
US11649609B2 · kind B2 · utility
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6References
16Claims
0Family size
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Key dates
| Filing date | Nov 9, 2020 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Jul 2, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/6652
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hydraulic system for a machine includes an implement pump, a valve, and an implement valve subsystem. The implement pump includes a load sensing control, and the valve controls the flow of hydraulic fluid to the implement pump. The implement valve subsystem includes one or more implement control subsystems to control movement of an implement. The valve is an electrohydraulic proportional relief valve and includes a solenoid configured to adjust the pressure of hydraulic fluid delivered to the implement pump proportionally to a current delivered through the solenoid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.