US 12,293,887 B2
Circuit breaker comprising an improved linkage mechanism
David Berard, Villeurbanne (FR); Quentin Dominique Louis Rognard, Villeurbanne (FR); Jérôme Laurent, Villeurbanne (FR); and Serge Bachelard, Villeurbanne (FR)
Assigned to GE INFRASCRUCTURE TECHNOLOGY LLG, Greenville, SC (US)
Appl. No. 18/249,366
Filed by General Electric Technology GmbH, Baden (CH)
PCT Filed Oct. 18, 2021, PCT No. PCT/EP2021/078782
§ 371(c)(1), (2) Date Apr. 17, 2023,
PCT Pub. No. WO2022/084237, PCT Pub. Date Apr. 28, 2022.
Claims priority of application No. 20202630 (EP), filed on Oct. 19, 2020.
Prior Publication US 2023/0386762 A1, Nov. 30, 2023
Int. Cl. H01H 3/46 (2006.01); H01H 1/36 (2006.01)
CPC H01H 3/46 (2013.01) [H01H 1/36 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A circuit breaker comprising a movable contact slidingly mounted in the circuit breaker along a main axis of the circuit breaker and comprising at least one driving rod slidably mounted in the circuit breaker along the main axis,
a linkage mechanism for driving the movable contact, comprising:
a pivoted driving fork rotatably mounted in the circuit breaker along a secondary axis perpendicular to the main axis, which driving fork cooperates with the driving rod through a cooperation of a primary pin provided on the driving rod and a primary slot provided on the driving fork,
a driven lever connecting the driving fork to the movable contact,
wherein the driving rod supports a secondary pin which cooperates with a secondary slot of the driving fork when the driving rod is in a position between a predetermined position, in which the movable contact is disconnected from an associated contact and an extreme opened position of the circuit breaker,
wherein the secondary pin is slidably mounted on the driving rod,
wherein the linkage mechanism is designed to drive the movable contact in displacement from a beginning of an opening step of the circuit breaker until the movable contact reaches a predefined position located beyond a separation position, and
wherein the movable contact remains stationary in the circuit breaker after having reached the predefined position.