Sealing apparatus
AssigneeStats (UK) Limited
InventorAngus George Bowie
Life of this patent
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Abstract
An apparatus for sealing a pipe having a defect or penetration comprises a housing coupled to the pipe by a clamp member. A piston is mounted in the housing and the piston and housing define a chamber. The piston further comprises a port for providing fluid communication between the pipe and the chamber. A seal member is provided between the piston and the pipe and, in use, the apparatus is located over and/or around the defect or penetration in the pipe such that the seal member engages the pipe. The piston is urged towards the pipe by a fluid pressure force generated by fluid in the pipe thereby maintain sealing engagement between the seal member and the pipe and to prevent leakage of fluid through the penetration.
Claims20
A sealing apparatus for use in sealing a defect or penetration in a pipe, the apparatus comprising:
- a body adapted to be coupled to a pipe;
- and
- a piston mounted in the body, the piston comprising a seal member adapted to engage the pipe, wherein the piston is adapted to be urged towards the pipe by a fluid pressure force generated by fluid in the pipe to maintain sealing engagement between the seal member and the pipe.
A method of sealing a defect or penetration in a pipe, the method comprising:
- providing a body having a piston slidably located therein, the piston comprising a seal member;
- and
- coupling the body to the pipe such that the seal member engages the pipe, wherein the piston is adapted to be urged towards the pipe by a fluid pressure force generated by fluid in the pipe to maintain sealing engagement between the seal member and the pipe.
Dependencies are inferred from the claim text.