Three-position booster valve mechanism having a piston-cylinder control system which connects centrally in between supply and exhaust valves to an operating member
US9841112B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2015 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Sep 10, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2013/0412
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A three-position booster valve mechanism includes an operating member for moving a supply and exhaust valve. A piston-cylinder control system is provided for moving the operating member between a first position in which the supply and exhaust valve are closed, a second position in which the supply valve is open and the exhaust valve is closed, and a third position in which the supply valve is closed and the exhaust valve is open. A pilot port is provided for moving the operating member in between the first, second and third positions in dependence of a pilot pressure. The piston-cylinder control system connects to the operating member at a central point of application in between the supply and exhaust valve. The operating member extends in opposing directions from the central point of application towards the supply and exhaust valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.