Metal working – Method of mechanical manufacture – Electrical device making
Patent
1989-10-02
1990-08-14
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
140 922, H01F 4106
Patent
active
049475436
ABSTRACT:
A method of forming a coiled wire in an annular groove formed on an inner surface of a cylindrical member, comprising the steps of: holding one end portion of a wire discharged from a distal end of a feed nozzle; rotating the feed nozzle about one of a pair of connecting pins provided at one end of the cylindrical member so as to wrap the wire around the one connecting pin; retaining the wire by a hook pin in the vicinity of a point of intersection between the annular groove and an axial groove which extends from the one end of the cylindrical member so as to intersect with the annular groove; rotating the feed nozzle along the annular groove and pressing the wire against a bottom face of the annular groove by a roller at a position disposed downstream in a rotational direction of the feed nozzle so as to not only feed the wire to the annular groove but wind the wire in the annular groove through a predetermined number of turns; and wrapping the wire around the other connecting pin in a state where the wire is retained at the point of intersection by the roller.
REFERENCES:
patent: 4448054 (1984-05-01), Wayne
patent: 4724604 (1988-02-01), Kawazoe et al.
Hamane Tokuhito
Kawazoe Hiroshi
Hall Carl E.
Matsushita Electric - Industrial Co., Ltd.
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