Carter Duncan Corp.

Other

Seymour Duncan Corporation

Kevin J Beller

James A Stryker

For battery-operated guitars and other stringed musical instruments, a coaxial battery-access cover cap mounts an audio phone jack that delivers the instrument's audio output. For battery access, the cover cap, which has a knurled rim for easy finger-gripping, can be removed from an attachment collar secured to the instrument with simple rotation of less than a half turn. As an option to enable the cap assembly to be installed in the instrument in place of an existing strap-peg, a strap-peg may be formed integrally on the cover cap around the jack opening. Extended embodiments can include an integral battery compartment with provision for mounting an electronic module enabling features including amplification, buffering, DSP and other effects in a self-contained system that requires only a single round opening for mounting in the instrument. The invention can be incorporated in original manufacture or as an after-market upgrade to practically any stringed instrument.

Combined jack and coaxial battery-access cover for a stringed musical instrument

A two-coil pickup having a magnetic flux shield configuration which shields an upper coil from magnetic flux variations caused by unwanted noise and concentrates this noise flux in a lower coil. The magnetic flux shield also concentrates magnetic flux generated by magnets and which envelopes strings of a stringed instrument in the vicinity of the upper coil. The upper coil and lower coil are coupled so that the noise signal generated in the lower coil is subtracted from the signal generated in the upper coil so as to cancel noise therefrom. The resulting output signal has substantially less noise than a one coil pickup. The shield also allows the lower coil to be smaller such that the overall size of the two coil pickup can be small enough to fit into the cavities formed for traditional one coil pickups.

Compact hum-canceling musical instrument pickup with improved tonal response

A humbucker pickup for creating electrical signals indicative of the string vibrations of an electric guitar includes a matched pair of elongated coil assemblies and a transversely polarized permanent magnet disposed between and parallel to the coils. Each coil assembly includes a flat vertically oriented core plate which is reduced to partial height in one portion of its length. The core structures are disposed parallel to each other but with the partial height portions of the core plates at opposite ends of the respective core structures. Under each string of the instrument the full-height portion of one core plate forms a tall pole piece adjacent the string for concentrating the magnetic field through the string, while the reduced-height portion of the other core plate forms a short pole piece spaced away from the string.

Humbucking pickup for electric guitar

Electromagnetic pickup for stringed instrument

Electromagnetic pickup for acoustical guitar

A pole piece for an electric string instrument comprised of a block of ferrous material having a slot formed therein. The string of the string instrument passes over the pole piece in aligned relationship with the slot thereby allowing vibration in a zone which is substantially free of any intense magnetic flux lines.

Growing community of inventors

Santa Barbara, CA, United States of America

Kevin J Beller