Pressure control device
US10837253B2 · kind B2 · utility
0Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2015 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Aug 13, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1285
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pressure control device for sealing a conduit comprises a seal element comprising an elastomer, the seal element defining a seal element external surface portion, the seal element external surface portion defining an external perimeter. The external perimeter is adapted to increase as an environmental temperature increases, such that, in use, an increase in the environmental temperature can move the seal element external surface portion into engagement with the conduit or, once engaged with the conduit or if already engaged with the conduit, can create an improved seal with the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.