US 11,657,963 B2
Transformer helix winding production
Michael J. Harrison, Petaluma, CA (US)
Assigned to Enphase Energy, Inc., Petaluma, CA (US)
Filed by Enphase Energy, Inc., Petaluma, CA (US)
Filed on Sep. 3, 2021, as Appl. No. 17/466,452.
Claims priority of provisional application 63/078,893, filed on Sep. 15, 2020.
Prior Publication US 2022/0084747 A1, Mar. 17, 2022
Int. Cl. C25D 1/00 (2006.01); H01F 41/098 (2016.01); C25D 7/06 (2006.01); C25D 3/40 (2006.01); C25D 17/00 (2006.01)
CPC H01F 41/098 (2016.01) [C25D 1/003 (2013.01); C25D 3/40 (2013.01); C25D 7/0614 (2013.01); C25D 17/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An apparatus for producing helix windings used for a transformer, comprising:
an electrically conductive mandrel comprising:
an elongated body;
a head comprising an eyelet detail; and
a winding structure disposed along the elongated body,
wherein the elongated body, the head, and a portion of the winding structure that is not to be electroplated are covered in an insulating material, and
wherein the eyelet detail is surrounded by the insulating material but is not covered by the insulating material.