Invention Grant
- Patent Title: Differential cylinder for a hydromechanical drive for electrical circuit breakers
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Application No.: US14171462Application Date: 2014-02-03
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Publication No.: US09920777B2Publication Date: 2018-03-20
- Inventor: Thomas Brenneis , Matthias Schmidt , Henrik Lohrberg , Frank Fiedler , Bruno Gehlert , Roland Palm
- Applicant: ABB Technology AG
- Applicant Address: CH Baden
- Assignee: ABB Schweiz AG
- Current Assignee: ABB Schweiz AG
- Current Assignee Address: CH Baden
- Agency: Barnes & Thornburg LLP
- Priority: DE102011109210 20110803
- Main IPC: F15B15/22
- IPC: F15B15/22 ; H01H3/60 ; H01H33/34

Abstract:
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.
Public/Granted literature
- US20140137731A1 DIFFERENTIAL CYLINDER FOR A HYDROMECHANICAL DRIVE FOR ELECTRICAL CIRCUIT BREAKERS Public/Granted day:2014-05-22
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