Automatic tubing drain
US10180040B2 · kind B2 · utility
0Cited by
7References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 2012 |
| Grant date | Jan 15, 2019 |
| Priority date | — |
| Expiry date | Mar 17, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An automatic tubing drain for rotary pumps automatically closes when the pump starts and opens when the pump stops using reactive torque generated by the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.