Abstract: A light emitting diode warning device is provided capable of acting as a roadway warning flare or as a flashing warning marker the device being portable and rechargeable and presenting warning lights in the vertical direction and in the horizontal direction with the horizontal illumination being observable over 360 degrees.

Abstract: A portable apparatus is provided for detecting the presence in a local atmosphere of gases that are hazardous to the health of humans and animals, the detector providing a warning to the operator of the apparatus of the presence of such gases.

Abstract: A safety alert system 10 is provided which allows the user to initiate a series of telephone communications by activating a pre-programmed control hub 12 by signaling the control hub 12 from a remote activation pendant 14 carried by the user to activate the control hub 12 to begin the control hub 12 dialing multiple pre-selected telephone numbers of pre-selected recipients to inform the recipients of the existence of an emergency situation involving the user, the control hub 12 also determining if the telephone communication has been answered and if the telephone communication has been answered by a person and not a mechanical device.

Abstract: A surveillance system is provided having a base unit for receiving digital video and audio transmissions from accessory units equipped with a camera having pan and tilt functions, a motion sensor, an intercom, infrared sensors and a doorbell button for contacting the interior of the dwelling a recording feature is provided to both automatically and on demand record video and audio transmissions received by the base unit from the accessory units.

Abstract: A light emitting diode warning device is provided capable of acting as a roadway warning flare or as a flashing warning marker the device being portable and rechargeable and presenting warning lights in the vertical direction and in the horizontal direction with the horizontal illumination being observable over 360 degrees.

Abstract: A beam of ions is directed under control onto an insulating surface by supplying simultaneously a stream of electrons directed at the same surface in a quantity sufficient to neutralize the overall electric charge of the ion beam and result in a net zero current flow to the insulating surface. The ion beam is adapted particularly both to the implantation of ions in a uniform areal disposition over the insulating surface and to the sputtering of atoms or molecules of the insulator onto a substrate.