Apparatus for making a transformer core of non-circular cross-section
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United States of America Patent
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-
May 10, 1994
Grant Date -
N/A
app pub date -
Dec 28, 1990
filing date -
Dec 28, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A transformer core of non-circular cross-section, preferably rectilinear, is formed by successively wrapping individual packets of core strips around a stationary mandrel of non-circular cross-section. Each packet is wrapped by a pair of yieldably biased rollers which follow the contour of the mandrel. As the packet is being wrapped, pressure pads are extended to hold the packet against the mandrel. The pressure pads are momentarily retracted to accommodate return movement of the roller wipers to receive a subsequent packet. The ends of the packet form a joint at the top of the mandrel. The positions of successive packets can be changed to vary the location of the joint in order to form a desired joint pattern.
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