Patent ID: 7818872

Claim:
A method of removing a half turn of a coil from a slot of a dynamoelectric machine comprising the steps of : cutting the coil with a cutting tool to completely sever the coil at a first location along a length of the coil; removing a wedge that anchors the coil in the slot; gripping the coil at an end with an upending tool at the first location along the length of the coil where the coil was cut with the cutting tool; hydraulically or pneumatically upending the gripped end of the coil at least partially out of the slot; hydraulically or pneumatically gripping the upended portion of the coil with an extraction tool; pulling a first segment of the coil from the slot hydraulically or pneumatically with the extraction tool, serially a segment at a time by: releasing the extracted coil from the extraction tool; moving the extraction tool a distance along the slot toward a portion of the coil still anchored in the slot; hydraulically or pneumatically re-gripping the coil substantially adjacent the portion of the coil still anchored in the slot; and pulling a second segment of the coil from the slot hydraulically or pneumatically with the extraction tool.