Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Dennis Roessler0
Kevin George0
Raymond Shaffer0
Date of Patent
March 10, 2020
Patent Application Number
16191672
Date Filed
November 15, 2018
Patent Citations Received
Patent Primary Examiner
Patent abstract
An air lock device for sealing a casing located inside a well, the air lock device including a body having a bore and configured to be attached with each end to the casing; a moving element located inside the bore; and a blocking element connected to the moving element, the blocking element preventing a fluid to pass through the bore of the body. The moving element forms an inner chamber with the body in which the blocking element is trapped after the blocking element is punctured by the moving element.
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