Hydraulic circuit, precedence valve block and operation valve block assembly
US6325104A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 2, 2000 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Feb 2, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87885
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic circuit of the present invention comprises a single pump, a precedence valve connected to a discharge pipe of the pump and having a high-pressure side output port and a low-pressure side output port for respectively distributing pressure oil to a high-pressure side circuit and a low-pressure side circuit, a high-pressure specified operation valve connected to one of the output port of the precedence valve, an actuator connected to the high-pressure specified operation valve, a pressure reducing valve connected to the other output port of the precedence valve, low-pressure specified operation valves connected to an output port of the pressure reducing valve, and another actuator connected to the low-pressure specified operation valves. When a load is applied to the actuator connected to the high-pressure specified operation valve, the pressure oil from the pump is supplied to the high-pressure specified operation valve with higher priority. With this feature, it is possible to provide a hydraulic circuit for distributing pressure oil discharged from a single pump to a high-pressure side circuit in which a high-pressure side operation valve is provided and to a low-pressu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.