Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2011-08-02
2011-08-02
Mai, Anh T (Department: 2832)
Metal working
Method of mechanical manufacture
Electrical device making
C336S188000, C336S208000, C336S189000
Reexamination Certificate
active
07987581
ABSTRACT:
Transformers having bobbins that are constructed in such a way that pre-formed secondary windings (e.g., resembling springs) may be slipped onto the bobbins after a primary winding has been wound onto the bobbin. Additionally, the secondary windings may also serve as a self-leading device. That is, they may not require terminations on pins of the bobbin, which may reduce cost and complexity. The secondary windings may have circular or non-circular (e.g., flat) cross-sections. The transformer winding techniques provided herein may reduce the number of components, and may promote smaller input filters and/or less filtering stages at a fraction of the cost of conventional transformers.
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patent: 2002208520 (2002-07-01), None
Flextronics AP LLC
Mai Anh T
Marsh & Fischmann & Breyfogle LLP
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