Patent
   D711839
Priority
Jul 03 2012
Filed
Jan 03 2013
Issued
Aug 26 2014
Expiry
Aug 26 2028
Assg.orig
Entity
unknown
0
12
n/a
The ornamental design for a hydraulic drive for high-voltage circuit breaker, as shown and described.

The patent or application file contains at least one drawing executed in color. Copies of this patent with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

FIG. 1 is a perspective view of a hydraulic drive for high-voltage circuit breaker showing our new design.

FIG. 2 is a first side elevational view thereof.

FIG. 3 is a second side elevational view thereof.

FIG. 4 is a third side elevational view thereof.

FIG. 5 is a fourth side elevational view thereof.

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top plan view thereof.

Schmidt, Matthias, Knospe, Jörg

Patent Priority Assignee Title
Patent Priority Assignee Title
3495508,
4166937, May 18 1978 General Electric Company Hydraulically-activated operating system for an electric circuit breaker
4346270, Aug 04 1980 EMERSON ELECTRIC CO A CORP OF MISSOURI Timing mechanism with a digital clock
4384182, May 29 1980 General Electric Company Hydraulic actuator for an electric circuit breaker
4849650, Mar 27 1987 BBC Brown Boveri Aktiengesellschaft Hydraulic drive for a high-voltage switchgear
4958548, Oct 16 1987 HARTMANN & LAMMIE GMBH & CO KG Hydraulic drive mechanism
6483067, Apr 08 1999 S & C Electric Co.; S&C ELECTRIC CO Electrical power distribution switch
7086225, Feb 11 2004 CONCENTRIC ROCKFORD INC Control valve supply for rotary hydraulic machine
8440930, Dec 31 2009 LS Industrial Systems Co., Ltd. Vacuum circuit breaker
8481880, Jun 02 2008 Siemens Aktiengesellschaft Drive system for electrical switching devices
20130256274,
20130277190,
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Jan 03 2013ABB AG(assignment on the face of the patent)
Jun 25 2014KNOSPE, JORGABB AGASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0331940308 pdf
Jun 25 2014SCHMIDT, MATTHIASABB AGASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0331940308 pdf
Mar 31 2019ABB AGABB Schweiz AGCONFIRMATION OF IP OWNERSHIP0525670918 pdf
Oct 25 2019ABB Schweiz AGABB POWER GRIDS SWITZERLAND AGASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0555850534 pdf
Oct 06 2021ABB POWER GRIDS SWITZERLAND AGHitachi Energy Switzerland AGCHANGE OF NAME SEE DOCUMENT FOR DETAILS 0586660540 pdf
Oct 02 2023Hitachi Energy Switzerland AGHITACHI ENERGY LTDMERGER SEE DOCUMENT FOR DETAILS 0655490576 pdf
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