Abstract: Embodiments for methods, systems and apparatuses of a supplier/buyer commerce network electronically introducing buyer and suppliers are disclosed. One computer-method includes electronically harvesting information related to characteristics of at least one of the buyers and anonymizing the harvested information. The anonymously harvested information is presented to a selected set of the suppliers, and a formation of a business relationship is facilitated between suppliers who express an interest in the at least one buyer.

Abstract: A method of manufacturing copper-indium-gallium-diselenide (CuInxGa1-xSe2 or just CIGS) photovoltaic devices using elemental selenium and without requiring complex codeposition or requiring the use of toxic H2Se gas. A precursor taking one of several forms is deposited onto a substrate having a back contact. A first precursor includes copper, gallium, and indium, the latter of which is deposited in the presence of a selenium flux, all deposited in that order. The second precursor includes indium deposited in the presence of a selenium flux, copper, and gallium, deposited in that order. Next, the precursor is selenized using one of two techniques: an indium-gallium removal technique and a copper-top technique. In both techniques, the precursor is heated to and held at a first selenization temperature, most preferably 450° C., and then heated to and held at a second selenization temperature, most preferably 550° C.

Abstract: A safety coupling for rapidly stopping a cutting tool or the like upon the de-energization of a driving motor includes an axially movable shell rotating together with a driven shaft and having a flange pressed by a spring toward a frictional braking element. Two parallel cams of generally triangular outline are articulated by their respective vertices to a drive shaft and, in a central position, are aligned with a common axis of the drive and driven shafts. On starting the motor, the resulting differential torque causes a relatively inverse tilting of the cams around a transverse axle whereby they axially shift the shell, against the force of the spring, and release its flange from the braking element. As soon as the motor is cut off, the differential torque vanishes and the cams regain their initial central position whereby the driven tool is arrested.