Patent ID: 9022054
Filing Date: 2015-05-05
Classification: B23C,B23D,F16L,Y10T

Abstract:
1. Maintenance device for performing maintenance on an elongated, tubular hollow body ( 2 ) which is adapted to transport a fluid, the maintenance device having a sealing device ( 4 ) which has a function-performing unit ( 12 ), which is adapted to seal off a working region ( 9 ) from surroundings of the hollow body ( 2 ), and which is adapted to move along a surface of the hollow body ( 2 ), wherein the sealing device ( 4 ) having the function-performing unit ( 12 ) is adapted to move relative to the surface ( 7 ) of the hollow body ( 2 ), at least partly, in the longitudinal direction (B) of the hollow body ( 2 ) while a sealed connection is maintained, wherein the sealing device ( 4 ) is adapted to move in a second direction (A) which extends at right angles to the first direction (B) such that the at least one function-performing unit ( 12 ) can be moved relative to a surface of the hollow body ( 2 ) on which maintenance is to be performed in a two-dimensional pattern of movement across the working region ( 9 ), while a sealed connection is maintained between the hollow body ( 2 ) and the sealing device ( 4 ).