Device for storing and releasing energy
US4731997A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 1987 |
| Grant date | Mar 22, 1988 |
| Priority date | — |
| Expiry date | May 22, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a system with an energy storing and releasing device the latter comprises a high pressure accumulator and switching over device for the charging and discharging of the latter from and to a low pressure accumulator using a hydraulic transducer which is connected with a device able to provide and take up power. The switching over device consists of four 2/1 way shut off valves of which two respective ones are placed in parallel and connected with a respective accumulator. The 2/1 way shut off valves are so connected with the hydraulic transducer that by paired switching of a respective one of the two 2/1 way shut off valves associated with one accumulator either the one or the other accumulator may be connected with the power input of the hydraulic transducer and switching over may take place from the power output of the latter to the other accumulator. By the use of simple 2/1 shut off valves the switching over device is generally simplified to a substantial extent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.