Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David Brocklebank1
Michael Antoine Joseph Caroline Bell1
Sylvain Denniel1
Date of Patent
February 28, 2012
1Patent Application Number
105224711
Date Filed
July 24, 2003
1Patent Citations Received
Patent Primary Examiner
Patent abstract
A seal assembly for sealing an annular space between an inner and an outer pipe in a double-walled subsea pipeline which seal assembly comprises an annular member (1) and moveable blocking means (2, 3) and: (a) under normal operating conditions is in a non-sealing position which allows the passage of a gas through said seal assembly; and (b) is actuatable from a non-sealing position to a sealing position in response to the entry of liquid into said annular space.
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