Apparatus for making a transformer core of non-circular cross-se

Details Apparatus for making a transformer core of non-circular cross-se Apparatus for making a transformer core of non-circular cross-se

1990-12-28

1994-05-10

Hall, Carl E.

Metal working

Means to assemble or disassemble

Means to assemble electrical device

295646, 29609, 242 707, H01F 4102

Patent

active

053096274

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.

REFERENCES:
patent: 1200190 (1916-10-01), Hahnemann
patent: 2011697 (1965-08-01), Vogt
patent: 2542806 (1951-02-01), Ford et al.
patent: 3162391 (1964-12-01), Westcott et al.
patent: 3802239 (1974-04-01), Karmann et al.
patent: 4141235 (1979-02-01), Ishihara
patent: 4413406 (1983-11-01), Bennett et al.
patent: 4467632 (1984-08-01), Klappert
patent: 4513596 (1985-04-01), Usher
patent: 5093981 (1992-03-01), Ballard et al.

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