Patent ID: 9209478
Filing Date: 2015-12-08
Classification: H01F,H01M,H03H,Y02E,Y02P,Y10T

Abstract:
1. A generally cylindrical, elongated mandrel, comprising: a first divided part having a generally semicircular cross-sectional shape comprising a generally curved region and a generally straight region; a second divided part having a generally semicircular cross-sectional shape comprising a generally curved region and a generally straight region, the first and second divided parts being arranged such that the generally straight region of the first divided part faces the generally straight region of the second divided part such that the first and second divided parts together have a generally cylindrical shape defined by the generally curved region of the first divided part and the generally curved region of the second divided part as an exterior of the generally cylindrical shape; a first electrode tap region of the first divided part, the first electrode tap region comprising a generally flat region in the generally curved region of the first divided part at the exterior of the generally cylindrical shape, wherein the first divided part and the first electrode tap region define a first cross-sectional shape of the first divided part; a second electrode tap region of the second divided part, the second electrode tap region comprising a generally flat region in the generally curved region of the second divided part at the exterior of the generally cylindrical shape, wherein the second divided part and the second electrode tap region define a second cross-sectional shape of the second divided part, the first cross-sectional shape of the first divided part and the second cross-sectional shape of the second divided part are generally the same, and the first electrode tap region and the second electrode tap region are diametrically opposed across the generally cylindrical shape of the mandrel; and a groove extending between the first and second divided parts, the groove being configured to receive an end of a material to be wound by the mandrel, and the first and second divided parts and the groove together being configured to wind the material around the exterior of the generally cylindrical shape around the first and second divided parts such that the material to be wound by the mandrel is wound across the first and second electrode tap regions.