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US 3,946,350 AGranted
Coil assembly for bobbin wound transformer
OwnerKatsuichi Gotoinventor
Life of this patent
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Abstract
A coil assembly for bobbin wound transformer includes a spacer between the end turns of a primary and secondary windings, which spacer is molded from synthetic resin material. The molded spacer includes an inner body portion which covers the surface of the primary winding, and a marginal portion which extends outwardly along the inner sidewall of the flange of the bobbin. The marginal portion sufficiently separates that portion of the outer secondary winding which is disposed along the flange of the bobbin.
Claims5
A coil assembly for a bobbin wound transformer comprising in combination:
- a bobbin having a hollow cylindrical body and a pair of radially extending flanges at the axially opposed ends of said body;
- an inner coil winding wound around said bobbin body;
- a molded substantially rigid spacer member of synthetic resin mounted on said bobbin and positioned concentrically on said bobbin body in overlying electrically insulated relation to said inner coil winding and a pair of radially extending flanges integral with the spacer member at the axially opposed ends thereof, the flanges of said spacer member being juxtaposed in parallel contiguous relation to and axially inwardly of said bobbin flanges;
- and an outer coil winding wound around said spacer member concentric to said inner coil winding and insulated therefrom by said spacer member, said spacer member comprises complementary sections having axially extending edges which are forced together to secure the spacer member on said bobbin body.
1 more element
Dependencies are inferred from the claim text.