Abstract: Strings of solar cells having laser assisted metallization conductive contact structures, and their methods of manufacture, are described. For example, a solar cell string includes a first solar cell having a front side and a back side, and one or more laser assisted metallization conductive contact structures electrically connecting a first metal foil to the back side of the first solar cell. The solar cell string also includes a second solar cell having a front side and a back side, and one or more laser assisted metallization conductive contact structures electrically connecting a second metal foil to the back side of the second solar cell. The solar cell string also includes a conductive interconnect coupling the first and second solar cells, the conductive interconnect including a strain relief feature.

Abstract: The present invention provides an apparatus for a continuously rotatable light source. The present invention provides a light fixture assembly which houses a light source having a light source axis. A drive cage is coupled to the light fixture assembly to adjust the angle of the light source. The drive cage is rotatably coupled to a base unit to continuously sweep the light source about a generally vertical axis of a base unit. An anti-rotational assembly comprised of a plurality of u-joints is also provided. The anti-rotational assembly prevents the light source from rotating about the light source axis with respect to the base unit, while the light source is swept about the generally vertical axis of the base unit.

Abstract: A method and apparatus for detecting, measuring the extent of and locating localized areas of deterioration, such as pitting, in the interior walls of tubing or other hollow objects. A cylindrical pneumatic probe with its air input side connected to a constant flow source of pressurized air and having a transversely extending baffle ring with a sharp outer edge across which the flow of air from said source is directed through the sharp edged orifice created between the baffle ring sharp outer edge and the tube inner wall and a pressure transducer connected to the probe air input air generates signals transmitted to a visual recording device connected to the pressure transducer. In the method the pneumatic probe having its thin outer edged baffle ring of a diameter closely matching that of the tube interior to be inspected is connected to a constant pressure air source.