Hydraulic control device
US10704679B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 21, 2018 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Oct 4, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16N2280/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a hydraulic control device, a first valve device is brought into an open state when a first value obtained by subtracting a value of a pressure in the first output side oil passage from a value of a pressure in the second output side oil passage is equal to or larger than a first threshold value. A second valve device is brought into an open state when an oil pressure in a third connection oil passage is equal to or larger than a second threshold value, and is brought into a closed state when the oil pressure in the third connection oil passage is smaller than the second threshold value. The first value is equal to or larger than the first threshold value and the first valve device is in the open state when the second valve device is in the closed state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.