Patent ID: 6809279
Filing Date: 2004-10-26
Classification: H01H,Y10T

Abstract:
A spring-loaded mechanical control mechanism for a circuit-breaker in a high-voltage or medium-voltage grid, said control mechanism comprising a toothed wheel turned by a spring from a first angular position to a second angular position, and a cog wheel co-operating with the toothed wheel to displace it from the second angular position to the first angular position so as to tension said spring, said toothed wheel having a peripheral set of teeth constituted firstly by a primary set of teeth secured to the wheel, and secondly by a portion of a set of teeth in the form of a retractable toothed segment, said primary set of teeth having constant pitch, wherein said retractable segment comprises at least four teeth spaced apart from one another at the same constant pitch as the pitch of said primary teeth.