Hydraulic system and control logic for collection and recovery of energy in a double actuator arrangement
US9051944B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 2012 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Dec 18, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/88
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Hydraulic unit adapted for connection to master and slave actuator system includes three valves, the first configured for selective fluid passage between the cap ends, the second configured for selective fluid passage between the slave cap end and an accumulator, and the third fluidly coupled for selective fluid passage between each of a single pump and the accumulator, and the slave cap end. During actuator retraction, the valves permit pressurized fluid in the slave cap end to be delivered to accumulator for storage; during extension, the valves permit pressurized fluid from pump and accumulator to be delivered to the slave cap end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.