Abstract: A substantially planar antenna configured for easy installation in a ceiling or ceiling tile. The antenna is configured for duplex communications in carrier frequency ranges spanning at least a 2:1 ratio of frequency values from the highest to the lowest frequency in the carrier frequency band, such as the frequency range from 800 to 960 MHz and 1700 to 2400 MHz, and within a coverage pattern below the ceiling extending through 360° azimuth and 180° elevation. The antennas are manufactured as a printed circuit board that snaps apart into a number of panels, which each contains at least a planar antenna element and a cross brace that are used to assemble the antenna. The printed circuit board is a dielectric substrate carrying printed conductor including a radiating circular monopole disc radiating element, associated transmission signal paths, and printed indicia that typically include assembly instructions and a logo.

Abstract: A door assembly for an inflatable restraint system mounted in a motor vehicle includes a deployment door closing a deployment opening in vehicle structure. The door assembly also includes at least one tether connected to the deployment door and operatively connected to the vehicle structure to retain the deployment door to the vehicle structure after inflation of an inflatable restraint of the inflatable restraint system.

Abstract: An apparatus for cooling electrical components contained inside an enclosed housing, which is positioned proximate to a dashboard of a vehicle, includes an inlet pipe which receives a forced air flow and an outlet pipe which expels air from the enclosed housing. The inlet pipe receives the forced air flow either from a fan or from an air intake mechanism which supplies filtered air to an intake manifold of the vehicle engine. The air intake mechanism also maintains the temperature of the vehicle battery at a predetermined temperature by use of heated air from the engine exhaust manifold.