Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Christopher Plucker0
Ron Payne0
Date of Patent
March 18, 2008
0Patent Application Number
112099020
Date Filed
August 23, 2005
0Patent Primary Examiner
Patent abstract
A device and technique for placing and moving a ferromagnetic element in an annulus between coaxially arranged cylindrical tubes. The device includes an electromagnetic ram moved along the interior of a cylindrical tube. The movable ferromagnetic element is magnetically coupled to the electromagnetic ram and moved by magnetic force to a location in the annulus defined by the tubes and magnetically coupled to the electromagnetic ram for movement in and removal from the annulus.
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