Intellectual Property India Publishes Patent Application for “vacuum Circuit Breaker And Method Of Tensioning An Opening Spring Of A Vacuum Circuit Breaker”

MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202444078500 A) filed by Abb Schweiz AG on October 16, 2024, for “vacuum Circuit Breaker And Method Of Tensioning An Opening Spring Of A Vacuum Circuit Breaker”.

Inventors include Marie Grue; Felix Boy; Magnus Nilsen; and Stale Talmo.

The application for the patent was published on July 10, 2026, under issue no. 28/2026.

Abstract: ABSTRACT A vacuum circuit breaker comprises a vacuum breaker unit (500); and a drive unit (100). The drive unit (100) includes an opening spring (110) for biasing a movable contact (510) of the vacuum breaker unit (500) towards the open position; and a spring tension adjustment 5 mechanism. The spring tension adjustment mechanism comprises an adjustment actuator (120); and a rigid coupling link (130) connecting the adjustment actuator (120) to the second end portion the opening spring (110). The adjustment actuator (120) is arranged offset from an opening spring axis (170).

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