Hydraulic control system and method with electro-proportional pressure valve and integral check
US11953031B2 · kind B2 · utility
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3References
13Claims
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Key dates
| Filing date | Feb 18, 2021 |
| Grant date | Apr 9, 2024 |
| Priority date | — |
| Expiry date | Jun 7, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/8636
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic control assembly includes means for holding pressure in a cylinder to inhibit boom or arm drop of a machine in the event that a hose between the cylinder and a main control valve (MCV) ruptures. The pressure holding means of the hydraulic control assembly include a hydraulic valve and a parts-in-body check assembly both configured for insertion into a valve cavity defined by a valve body. The hydraulic valve comprises a proportional piloted valve that controls pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.