Patent ID: 6087607
Filing Date: 2000-07-11
Classification: H01H

Abstract:
In combination with a tap changer or movable-core coil having a motor drive with a shaft rotatable about and extending along an axis, a position-signaling apparatus comprising:a support plate;an annular array of separate signaling contacts on the plate centered on the axis;a cam disk juxtaposed with the plate, rotationally fixed with the shaft, and having an edge formed with a plurality of bumps;a contact arm mounted on the cam disk, independently of the shaft and engageable with the signaling contacts, whereby as the cam disk is rotated by the shaft the contact arm contacts succeeding signaling contacts;a switch mounted adjacent the cam edge and connected to the contact arm; andcam-follower means on the switch engaging the bumps of the cam edge for opening and closing the switch synchronously as the contact arm moves between signaling contacts.