Power units with manual override controls for hydraulic systems
US11149765B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 2020 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Aug 4, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/895
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A power unit with manual override control for a hydraulic system having an initial state and at least one operational state is provided, comprising: a tank for storing hydraulic fluid that moves between a first chamber and a second chamber of a hydraulic cylinder; a pump that routes the hydraulic fluid in and out of the tank; a first relief valve; a first solenoid valve configured to shift between a plurality of positions based on the at least one operational state of the hydraulic system; a first check valve connected to the first solenoid valve; a manual override control unit comprising: a second check valve; and a second solenoid valve configured to shift between a plurality of positions based on activation of a manual override control, wherein the activation of the manual override control returns the hydraulic system from the at least one operational state to the initial state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.