Differential cylinder for a hydromechanical drive for electrical circuit breakers

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United States of America Patent

PATENT NO 9920777
SERIAL NO

14171462

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A differential cylinder for a hydromechanical drive for actuating an electrical switch, for example a high-voltage switch, is disclosed which includes a first pressure region for applying a working pressure, a second pressure region, and a piston which is capable of moving in a movement region and which is movable depending on a pressure difference between the first and second pressure region. A damping device is provided which, in the event of a movement of the piston in the direction of the second pressure region, provides damping with respect to the movement of the piston in a section of the movement region, wherein the damping is adjustable.

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Patent Owner(s)

  • ABB SCHWEIZ AG;ABB TECHNOLOGY AG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brenneis, Thomas Mainaschaff, DE 5 4
Fiedler, Frank Mannheim, DE 5 25
Gehlert, Bruno Hösbach, DE 1 0
Lohrberg, Henrik Frankfurt, DE 6 11
Palm, Roland Florstadt, DE 4 53
Schmidt, Matthias Frankfurt, DE 73 366

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