Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1987-07-23
1988-09-20
Werner, David
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 708, 242 711, H01F 1104
Patent
active
047719583
ABSTRACT:
An apparatus for winding two coils simultaneously on a bobbin, such as winding the two secondary coils of a linear variable differential transformer (LVDT), has a chuck or the like holding a bobbin. The chuck is rotated by a first motor. First and second wire guides move linearly in directions opposite to one another along the axis of rotation of the bobbin, and guide two strands of wire onto the rotating bobbin. The wire guides arrive simultaneously at the longitudinal center of the bobbin where the two strands of wire cross one another. The two wire guides are driven by two lead screws which rotate at identical speeds but in opposite directions to one another. The lead screws are driven by a second motor. The speeds of rotation of both motors are controlled by a computer, whereby the pitch pattern of the windings is determined by a computer program.
REFERENCES:
patent: 2742238 (1956-04-01), Clark et al.
patent: 3801029 (1974-04-01), Malburg
patent: 4007881 (1977-02-01), Haslau et al.
patent: 4256268 (1981-03-01), Fahrbach
patent: 4553705 (1985-11-01), Uchida et al.
Becker William G.
Bourns Instruments, Inc.
Klein Howard J.
Werner David
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