Electrical pickups
OwnerKevin N. G. Nunaninventor
Life of this patent
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Abstract
An electrical pickup for a stringed musical instrument comprises a cylindrical permanent magnet and a coil surrounding the magnet and wound lengthwise thereof. The ends of the magnet are fixed to two rigid mounting wires, and the coil is wound on a former comprising a central tubular core and two parallel plates fixed to the tube on diametrically opposite sides thereof. The tube, and thus the former and coil as a whole, can turn on the magnet. The magnet is magnetized so that the magnetic poles thereof are positioned at diametrically opposite edges of the magnet, i.e. at the ends of a diameter of the circular cross-section of the magnet cylinder. Thus the former and coil can be turned between two positions 180.degree. apart in order to reverse the winding direction of the coil around the fixed magnetic axis H of the magnet.
Claims9
An electrical pickup assembly for a stringed musical instrument, comprising an elongate permanent magnet which is magnetized so that the magnetic poles thereof are respectively positioned at opposite side edges of the magnet, and a coil surrounding and wound lengthwise around the magnet, the magnet and coil being relatively rotatable about a longitudinal axis of the magnet and the assembly having mounting means so that it can be fixed to an instrument without impeding said relative rotation of the magnet and coil through at least an angle of 180.degree. at the limits of which angle a magnetic axis of the magnet is substantially aligned with the winding axis of the coil.
Dependencies are inferred from the claim text.