Abstract: A ribbon overbraid cable includes a core such as a coaxial cable; a ribbon overbraid including braided, reflective ribbon, the overbraid enmeshed about and surrounding the core; and an extruded layer of transparent or translucent polymer extruded over the overbraid, whereby the overbraid is highly reflective of light incident on the cable and whereby the cable is protected against fraying.

Abstract: An electromagnetic pickup for stringed musical instruments has at least one bobbin mountable to the instrument beneath the instrument's strings, each of the bobbins having a body and a coil wrapped around the body, the body having one or more holes therethrough positioned below the strings. A magnetic device for generating a magnetic field around the bobbins and one or more pole pieces extended through the holes is also included. Ferromagnetic material is positioned within the body of one or more of the bobbins or between the bobbin(s) and the musical instrument to increase the device's inductance.

Abstract: An electromagnetic pickup for a stringed musical instrument has an upper bobbin having an upper bobbin body and an upper bobbin coil of wire wrapped around the upper bobbin body; a lower bobbin positioned below and coaxial to the upper bobbin, the lower bobbin having a lower bobbin body and a lower bobbin coil of wire wrapped around the lower bobbin body, the bodies mountable on the instrument proximate and below the strings, the coils having axes perpendicular to the strings; an integral plate of ferromagnetic material including a base disposed between the upper bobbin and lower bobbin perpendicular to the coil axis and two side walls extending upwardly and perpendicularly from the base; and a magnetic system extending through at least the upper bobbin body and in contact with the base of the integral plate for generating a magnetic field around the bobbins, wherein the side walls include a cut-away area positioned below one or more of the ferromagnetic strings.

Abstract: An electromagnetic pickup for stringed musical instruments has a primary bobbin having an elongated body with holes for receiving at least one pole piece or magnet and a coil of wire wrapped around the elongated body. At least one magnet is positioned in close proximity to the primary bobbin to create a magnetic field around the primary bobbin. In addition, the pickup includes a secondary bobbin having a body significantly smaller than that of the primary bobbin; a coil of wire is wrapped around the smaller body. The secondary, or hum-cancelling, bobbin is positioned in close proximity to the primary bobbin solely to cancel an audible hum caused by a power supply used in the amplification equipment and/or other environmental sources.