Transformer winding and production method thereof

Details Transformer winding and production method thereof Transformer winding and production method thereof

2004-05-14

2010-11-23

Kim, Paul D (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S592100, C029S605000, C072S464000, C083S169000, C310S179000, C310S208000, C336S212000, C336S234000

Reexamination Certificate

active

07836580

ABSTRACT:
A method for producing a winding, particularly for electrical transformer from a cylindrical tubular metal element of polygonal cross-section, includes steps of machining, in a first series of passes, a first series of cuts substantially parallel to one another through all of the sides of the tubular element with the exception of a last one of said sides, and machining, in a second series of passes, a second series of cuts in said last one of said sides in order to ensure that junctions of the first series of cuts open out in the sides adjacent to the second series of cuts, so that the first and second series of cuts are continuous with respect to one another and constitute a single groove of helicoidal shape.

REFERENCES:
patent: 3466743 (1969-09-01), De Puy
patent: 3656378 (1972-04-01), Davis
patent: 5488761 (1996-02-01), Leone
patent: 0 436 434 (1991-07-01), None

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