Electrical pickup for a stringed instrument having ferromagnetic strings
AssigneeDiMarzio Musical Instrument Pickups, Inc.
InventorsLawrence P. DiMarzio, Steven L. Blucher
Life of this patent
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Abstract
An electrical pickup device for a stringed musical instrument having ferromagnetic strings comprises a pair of superposed coaxial bobbins, each axially wound with a coil having its axis perpendicular to the instrument strings. An integral plate of magnetic material is provided comprising a base disposed between the two bobbins perpendicular to the coil axis and two side walls extending upwardly and perpendicularly from the base to at least immediately below the top face of the upper bobbin. A plurality of rod-like permanent magnets extend through at least the upper coil parallel to the axis thereof and contact the base of the integral plate and the magnets have like polarities at the tops thereof.
Claims4
An electrical pickup device for a stringed musical instrument having ferromagnetic strings, the device comprising:
- a. a pair of superposed coaxial bobbins, each axially wound with a coil having its axis perpendicular to the instrument strings;
- b. an integral plate of magnetic material comprising a base disposed between the two bobbins perpendicular to the coil axis and two side walls extending upwardly and perpendicularly from the base to at least immediately below the top face of the upper bobbin;
- and
- c. a plurality of rod-like permanent magnets extending through at least the upper coil parallel to the axis thereof and in contact with the base of the integral plate and wherein the magnets have like polarities at the tops thereof.
Dependencies are inferred from the claim text.