Abstract: Auxiliary lighting for motor vehicles. The lighting system of the invention may be configured so that it both mounts to and draws power from a socket on the vehicle. The lighting systems may use one or more heat management strategies to help dissipate heat generated during operation. A user may easily switch among two or more operational modes. In preferred modes, the user may select among available modes simply by relative rotational motion among housing components. Some aspects of the invention also use a combination of reflecting elements that provide a very favorable pattern of illumination. According to one such embodiment, a primary reflector includes a dichroic surface that reflects some light outward, but allows some light to pass. A secondary reflector is then used to capture and reflect the passing light outward as well.

Abstract: A multipair telephone cable especially designed to carry interoffice traffic consists of copper conductors insulated with expanded plastic with or without a solid plastic skin. The copper gauge size, insulation expansion factor and dielectric diameter are uniquely designed to consume a minimum of cable cross-section area while permitting use of the cable to provide voice frequency circuits in a manner comparable to normal; 24-gauge cable as well as to provide carrier frequency circuits operating in the range of from about 100 kHz to 8.0 MHz comparably to normal 22-gauge cable. The cable includes pairs twisted according to a constant twist frequency spacing concept.