Patent ID: 8917494
Filing Date: 2014-12-23
Classification: H02B

Abstract:
1. A shutter device for a drawout circuit breaker, comprising: first and second moveable plungers for contacting the circuit breaker; a first slider element attached to a first mask having a plurality of first apertures wherein the first mask is moveable relative to a back plate; a first link arm rotatably attached to the first plunger and the first slider element; a second slider element attached to a second mask having a plurality of second apertures wherein the second mask is moveable relative to the back plate; a second link arm rotatably attached to the second plunger and the second slider element wherein movement of the first and second plungers in a first direction causes movement of the first and second slider elements and the first and second masks in a second direction transverse to the first direction to form mask passageways; and a plurality of spring mount elements for supporting the back plate, wherein the spring mount elements enable movement of the back plate in the first direction.