Method of manufacturing a coil

Details Method of manufacturing a coil Method of manufacturing a coil

2011-04-19

2011-04-19

Kim, Paul D (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S602100, C029S605000, C242S437300, C242S437400, C242S443000, C242S445100, C336S212000, C336S234000, C505S203000

Reexamination Certificate

active

07926168

ABSTRACT:
A method of manufacturing a coil having a cross section differing from a circular ring cross section. In this method a circular cylindrical coil with a circular ring cross section is first wound and then reshaped into a coil with a cross section differing from the circular ring cross section. At least two axially parallel fingers of an expander are temporarily inserted into the coil interior for reshaping the wound circular cylindrical coil and are displaced in a diverging relative movement after the insertion and while doing so expand the initially circular cylindrical coil into the coil having the different cross section.

REFERENCES:
patent: 42 32 882 (1994-03-01), None
patent: 57101497 (1982-06-01), None
patent: 58-056600 (1983-04-01), None
patent: 58-103854 (1983-06-01), None
patent: 58-146198 (1983-08-01), None
patent: 2002-135891 (2002-05-01), None
International Search Report for Int'l Patent Appln. PCT/IB2005/052701 (May 19, 2006).

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