Inner seal for ram-type blowout preventer
US5833208A · kind A · utility
31Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1997 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Sep 15, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/062
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A resilient sealing insert for use in a ram-type blowout preventer the insert having an outer sealing surface enclosing an angle of less than 180.degree. and sealing faces that extend radially outwardly from the outer sealing surface in a plane substantially normal to the axis of generation of the arcuate sealing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.