Safety valve or blowout preventer for use in a fluid transmission conduit
US4202368A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1978 |
| Grant date | May 13, 1980 |
| Priority date | — |
| Expiry date | Mar 13, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7785
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatus is provided for connection along a conduit for free flowing transmission of fluids in a first direction and for selective control of fluid flow in a second direction. The apparatus provides means whereby fluid flow in the second direction in excess of a predeterminable rate of the fluid flow permits a fixed volume displacement of fluid within the conduit without limitation upon the predeterminable rate of fluid flow. The apparatus also defines second means whereby fluid flow in the second direction and within the predeterminable rate of fluid flow permits an unrestricted volume displacement of the fluid through the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.