Compact pressure balanced rotary valve
US8272401B2 · kind B2 · utility
73Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 4, 2009 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Jan 29, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86501
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pressure balanced rotary valve can be made more compact if the ports on the stator within can be located on a port pitch circle of smaller diameter. In certain circumstances for rotary valves used in pressure swing adsorption devices, it is acceptable for the spacing between the ports to be made smaller than the ports themselves. In a rotary valve comprising variable loading means (e.g. pistons) and fixed loading means (e.g. springs), this can involve reducing the piston size and increasing the load provided by the springs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.