Snap-lock seal for seal valve assembly
US6820695B2 · kind B2 · utility
8Cited by
34References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Aug 17, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A float apparatus for use in a casing string. The float apparatus includes an outer case having a check valve positioned therein. A body portion which may be comprised of high compressive strength cement affixes the check valve to the outer case. The check valve includes a valve body and a valve element. The valve body defines a valve seat and the valve element is deformable so that it will conform to the shape of the valve seat and seal against flow in the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.