Piston pump with barrier fluid seal
US10378522B2 · kind B2 · utility
0Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2015 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Feb 26, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/162
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A piston pump including a cylinder body having an internal fluid chamber, a piston configured to axially cycle within the cylinder body, an inlet valve, an outlet valve, an annular seal positioned between the piston and cylinder body, a barrier fluid pocket formed in the cylinder body adjacent one end of the annular seal, and a barrier fluid contained within the barrier fluid pocket, the barrier fluid preventing suspended solids in pumped fluid from contacting the annular seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.