Modular directional valve with two or more elements of mixed type
US10774851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2016 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Mar 14, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/7142
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A modular directional valve with two or more elements (E1, E2, E3, E4) in turn connectable to respective utilities (U) through the uses (A1, B1, A2 . . . B4); of which one or more elements (E1 E2) are of the CA type while one or more elements are of LS flow sharing type (E3, E4). The valve designed to be connected to a first high pressure line P1 which connects the crossing elements to a constant displacement pump (PA) and a second high pressure line P2 which connects the LS flow sharing type elements to a variable displacement pump LS, the connection to a low pressure line, the connection to a load sensing signal line (LS2) with the variable displacement pump LS (PB). Said valve acting so that if the load sensing flow sharing elements (E3, E4) fed by the line (P2) designed for the connection with the pump (PB) are in saturation, it withdraws from the carry over (6) of the group of elements (E1, E2) of the crossing type the amount of flow rate equal to the difference between the flow rate required by the utilities (U) of the elements (E3, E4) and the maximum flow rate which can be supplied by the LS pump (PB); otherwise, it freely delivers the flow rate of the constant displacement…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.