Drive for an electric high voltage circuit-breaker
AssigneeSiemens Aktiengesellschaft
InventorsKlaus Schuler, Hans Niemeier
Life of this patent
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Abstract
A drive for an electric high voltage circuit-breaker has a revolving crank that is driven by an energy storage mechanism, such as a spring, between an upper dead center and a bottom dead center and a backstop that prevents the crank from moving backwards against the driving direction after it moves beyond the bottom dead center. The backstop is provided with a friction clutch with a first ring that is firmly coupled to the crank and the driving shaft and that can rotate in relation to a second return stop ring when a releasing force is exceeded.
Claims5
A drive for an electric high voltage circuit-breaker, comprising:
- a revolving crank that can be driven in a driving direction by an energy storage mechanism between an upper dead center and a bottom dead center position;
- and
- a backstop for preventing the crank from moving backwards for more than a predetermined distance against the driving direction after the crank moves beyond the bottom dead center position, wherein the backstop includes a friction clutch having a first ring that is firmly coupled to the crank, and a second return stop ring that is rotatable relative to the first ring when a releasing force is overcome, and wherein the crank moves against the driving direction until a frictional engagement between the first ring and the second return stop ring prevents the crank from moving against the driving direction for more than the predetermined distance.
Dependencies are inferred from the claim text.