Ram type blowout preventer having improved ram front packings
US5180137A · kind A · utility
7Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | Oct 2, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/062
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
There is disclosed a ram type blowout preventer with rams having ram front packings disposed within a recess extending across the front face of each ram body and including a seal strip of elastomeric material, metal plates above and below the strip of elastomeric material, and strips of non-elastomeric, relatively rigid material between the seal strip of elastomeric material and the top and bottom metal plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.