Specialized civil engineering machine, in particular slotted wall milling machine

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12043974
SERIAL NO

17299009

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Abstract

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The present invention relates to a special civil engineering machine, in particular a slurry wall cutter, comprising at least one rotating tool and a tool drive that is arranged within a housing of the special civil engineering machine and is sealed with respect to the environment by means of at least one bearing seal in the region of its shaft exit from the housing to the driven tool, characterized in that the bearing seal comprises at least two separate sealing elements, whose arrangement forms a sealing chamber located between the sealing elements, wherein a pressure compensation device is provided, which controls the chamber pressure in the sealing chamber in dependence on the ambient pressure of the special civil engineering machine.

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Patent Owner(s)

Patent OwnerAddress
LIEBHERR-WERK NENZING GMBH6710 NENZING

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Reinhardt, Hans Bürs, AT 11 116

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