Abstract: A system can include a first wireless coupler and a second wireless coupler. The first wireless coupler can include a first laminated core that can be wrapped around a tubular and a first wire wrapped around the first laminated core. The second wireless coupler can include a second wire that can be positioned coaxially around the first wire and at a distance from the first wire for facilitating wireless power transfer between the first wireless coupler and the second wireless coupler. The second wireless coupler may or may not include a second laminated core wrapped around the second wire.

Abstract: The present invention is a device for movement within a pipeline (2), as for instance a plug, comprising a main body and gripping means (3) comprising at least two gripping segments arranged movable between a retracted position out of contact with an inner wall (21) of a pipeline (2) and an extended position in contact with an inner wall (21) of a pipeline (2). According to the invention the device comprises at least two protection means (5) arranged extending in a radial direction from a main outer diameter (110) of the main body and arranged around a circumference of the main body, where a distal end (51) of the protection means (5) is extending outside the grip segments (14) in an retracted state of the grip segments (14) but is within an outer diameter (143) of the grip segments (14) in an extended state of the grip segments (14).