Claims
- 1. A tool for use under water comprising a sealing device wherein a piston, which is movable within a chamber, is capable of causing compression of a seal member, and wherein a first valve actuated inlet to the chamber at a first end of the piston allows under-water pressure to act on the piston to compress the seal member, and a second valve actuated inlet to the chamber at an opposing end of the piston allows under-water pressure to act on the piston to release the seal member.
- 2. A tool according to claim 1, wherein the seal member is annular.
Priority Claims (1)
Number |
Date |
Country |
Kind |
0017484 |
Jul 2000 |
GB |
|
Parent Case Info
This is a continuation of application No. PCT/GB01/03192, filed Jul. 12, 2001.
US Referenced Citations (14)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2214259 |
Aug 1989 |
GB |
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/GB01/03192 |
Jul 2001 |
US |
Child |
10/345673 |
|
US |