Invention Grant
- Patent Title: Leak sealing apparatus
- Patent Title (中): 泄漏密封装置
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Application No.: US12745142Application Date: 2008-12-03
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Publication No.: US08950437B2Publication Date: 2015-02-10
- Inventor: Nicholas John Ryan , Andrew James Cochran , Terrence Francis Stebbings
- Applicant: Nicholas John Ryan , Andrew James Cochran , Terrence Francis Stebbings
- Applicant Address: US LA Madisonville
- Assignee: Seal-Tite, LLC.
- Current Assignee: Seal-Tite, LLC.
- Current Assignee Address: US LA Madisonville
- Agency: Baker & Hostetler LLP
- Priority: GB0723661.5 20071203
- International Application: PCT/GB2008/051150 WO 20081203
- International Announcement: WO2009/071944 WO 20090611
- Main IPC: F16L55/18
- IPC: F16L55/18 ; F16L55/162 ; E21B33/138

Abstract:
An apparatus includes one or more sealing elements to be transported along a duct by the flow of fluid therein at an internal pressure and to be drawn to a leak by the pressure differential resulting from a reduced pressure associated with the locality of that leak. Each sealing element has a body formed from an elastic material to have one or more impermeable bubbles filled with gas so that the sealing element has a volume which varies resiliently according to the change in volume of the bubble(s) in response to externally applied pressure. The product of the volume of the bubble(s) and the pressure of the gas therein is selected to provide a sealing element having a transport volume at the internal pressure which is appropriate to enter a leak and which, in response to the reduced pressure associated with the locality of that leak, is capable of increasing in volume from the transport volume sufficiently to seal that leak.
Public/Granted literature
- US20110198812A1 LEAK SEALING APPARATUS Public/Granted day:2011-08-18
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