Abstract: A jumper cable module for use, e.g., with optical and/or electrical equipment. The module provides proper tensioning for jumper cables and retains them in a protected manner. In one embodiment, the module includes a pulley and an eccentric cam pivotally connected to a base plate. A jumper cable is wrapped around grooves in the pulley and cam such that the connectorized ends of the cable extend out and attach to the specified connection points. The cam is turned about its axle to produce the desired tension of the cable. For maintaining the tension, the cam may incorporate a tensioning mechanism, e.g., a spring-loaded ball mechanism or serrated edge ratchet. When the cable needs to be removed from the module, the tensioning mechanism is disengaged and the cam is turned to create slack in the cable for ease of cable removal. A module that includes stacks of pulleys and cams may handle multiple jumper cables.

Abstract: A jumper cable module for use, e.g., with optical and/or electrical equipment. The module provides proper tensioning for jumper cables and retains them in a protected manner. In one embodiment, the module includes a pulley and an eccentric cam pivotally connected to a base plate. A jumper cable is wrapped around grooves in the pulley and cam such that the connectorized ends of the cable extend out and attach to the specified connection points. The cam is turned about its axle to produce the desired tension of the cable. For maintaining the tension, the cam may incorporate a tensioning mechanism, e.g., a spring-loaded ball mechanism or serrated edge ratchet. When the cable needs to be removed from the module, the tensioning mechanism is disengaged and the cam is turned to create slack in the cable for ease of cable removal. A module that includes stacks of pulleys and cams may handle multiple jumper cables.

Abstract: A clip assembly and method of attachment for a heat sink having a pin-fin array employing thermally conducting tape to secure the heat sink to a heat dissipating BGA component together with at least one clip assembly which is secured to the underside of the component at its edges.

Abstract: A sample holder (22) is provided for use with a solderability testing machine (10) to releasably engage a sample 12) for immersion into a solder bath (26). The sample holder comprises a beam (28) provided at its upper end (30) with means (29) for engaging the solderability tester. A clamping mechanism (34) is carried by the beam (28) below its upper end for releasably holding the sample. The beam also carries a threaded, depth-controlling member (50) which may be threadedly adjusted to precisely control the depth of immersion of the sample held by the holder into the sample bath.

Abstract: A method for preventing solder sticking on printed circuit substrates comprises mechanically roughening the surface of the substrate.