Patent ID: 9633808
Date: 2017-04-25
CPC Classifications: H01H

Claim:
1. An electrical interruption apparatus comprising: a set of separable contacts comprising a stationary contact and a movable contact; a drive rod that is elongated and that comprises a first end and a second end opposite one another, the drive rod further comprising a reference situated at the first end, the drive rod being movable between an OPEN position wherein the stationary and movable contacts are separated from one another and a CLOSED position wherein the stationary and movable contacts are engaged with one another; a biasing apparatus having a driven portion that is connected with the drive rod at its second end and further having a responsive portion that is connected with the movable contact, the biasing apparatus being movable between a first state when the drive rod is in the OPEN position and a second state wherein the drive rod is in the CLOSED position and the movable contact is biased by the biasing apparatus against the stationary contact, at least one of the driven portion and the responsive portion being movable with respect to the other of the driven portion and the responsive portion in moving between the first and second states to apply an amount of loading to the biasing apparatus; and an indication apparatus comprising an indication element that is connected with the responsive portion and that is structured to provide at the reference an indication that is representative of the amount of loading, the indication being a relative position of the indication element with respect to the reference.