Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 12, 2022
Patent Application Number
16623908
Date Filed
June 19, 2018
Patent Citations
Patent Citations Received
Patent Primary Examiner
A valve seal device is for a valve in a pipeline. The valve seal device has four moveable seats configured for sealingly contacting a valve member, two seats being positioned on each side of the valve member. At least one of the moveable seats on each side of the valve member is an actuation seat being controllable from a non-contact position to a contact position where it seals against the valve member.
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