Method for making precision, square-wire air core coils
Abstract
Abstract A METHOD OF MAKING PRECISION, SQUARE-WIRE AIR CORE COILS BY COMBINING A ELECTROFORMING TECHNIQUE WITH A PRECISION MACHINING TECHNIQUE. THE MANUFACTURE INCLUDES THE STEPS OF COPPER PLATING AN ALUMINUM MANDREL HAVING A POLISHED OUTSIDE DIAMETER THE SIZE OF THE DESIRED INSIDE DIAMETER OF THE COIL, MACHINING THE COPPER PLATING TO THE DESIRED OUTSIDE COIL DIAMETER, AND CUTTING A HELICAL GROOVE THROUGH THE COPPER PLATING FORM A COIL. THE COIL ENDS ARE THEN TRIMMED TO THE DESIRED LENGTH AND MOUNTING APERTURES ARE FORMED AT THE ENDS OF THE COIL. FINALLY, THE MANDREL IS SEPARATED FROM THE COIL BY DISSOLVING THE MANDREL IN A SOLUTION OF LYE. ADDITIONAL OPTIONAL STEPS INCLUDE DEPOSITING A COATING OF SILVER ON THE COIL, INSTALLING SQUARE CROSS-SECTION TEFLON COMBS INSIDE THE COIL TO PREVENT DEFORMATION, AND ENCLOSING THE COIL INSIDE A CYLINDRICAL SLEEVE OF HEAT SHRINKABLE TUBING TO PROVIDE LONGITUDINAL RIGIDITY.
Inventors
- 👤 Alfred B Beck
- 👤 Kenneth L Schirmer
Bibliographic Details
Claims Analysis
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