Patent ID: 7397007
Filing Date: 2008-07-08
Classification: H01H

Abstract:
1. An apparatus for controlling a mechanism operated contact assembly comprising; a rotatable main shaft operable between an open and a closed position; a bidirectional snubber member (BDS) coupled to the main shaft for controlling a force applied to a pantograph, the BDS comprising: a BDS plunger rod having a BDS plunger top and a BDS plunger bottom; a BDS plunger tube disposed around the BDS plunger rod and reciprocally movable along the BDS plunger rod between the BDS plunger top and the BDS plunger bottom; an opening spring disposed around the BDS plunger rod proximate the BDS plunger top and reciprocally movable along the BDS plunger rod responsive to movement of the BDS plunger rod; and a closing spring disposed around the BDS plunger rod proximate the BDS plunger bottom and reciprocally movable along the BDS plunger rod responsive to movement of the BDS plunger tube; and a first means for linking the rotatable main shaft with the BDS.