Maintenance device, and method for introducing a maintenance tool into an elongate hollow member

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United States of America Patent

PATENT NO 8893739
SERIAL NO

13131276

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Importance

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Abstract

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Disclosed is a maintenance device for an elongate, tubular hollow member (2) designed to conduct a fluid. Said maintenance device comprises a sealing mechanism (4) which is to seal a working zone (9) relative to surroundings (30) of the hollow member (2) and can be moved in one direction along the hollow member (2). A side of the sealing mechanism (4) that faces the hollow member (2) forms an at least partially curved surface and can be moved in the longitudinal direction of the hollow member (2), especially in order to be placed in the sealing position. A method for servicing an elongate, tubular hollow member (2) is also claimed.

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Patent Owner(s)

Patent OwnerAddress
ROSEN SWISS AGSWISS STANS

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rosen, Hermann Kastanienbaum, CH 18 35

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