Pneumatic directional valve and method of operation
US9945494B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 2013 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | May 15, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86879
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pneumatic system for operating a hydraulic valve is provided. The system may include: a first piston set; a first connector attached to the first piston operably connecting the first piston; a first spring biasing the first piston to move in an axial direction; a second port in the first housing; a second piston set with in a second cavity defined by a second housing; a second connector attached to the second piston, a second spring biasing the second piston to move in an axial direction; a first port in the second housing; and a second port in the second housing configured to provide fluid communication with in the second cavity at a second end of the second piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.