Abstract: A fan and a fan blade are provided for allowing airflow through the fan blade in a fan failure condition. The fan blade includes a peripheral member defining an opening. A flexible cover member is attached to the peripheral member for covering the fan blade opening during normal operation of the fan. The flexible cover member is hingeably attached to the peripheral member for movement away from the peripheral member enabling airflow through the fan blade opening in a fan failure condition.

Abstract: Methods and apparatus are disclosed for a tunable inductor. A coil of electrically conducting material is wrapped around a coilform, preferably generally cylindrical in shape. The coilform is constructed having a threaded portion of screw-like ridges with troughs between the ridges. The coilform may also have an unthreaded portion. The ridges and troughs of the threaded portion may run along substantially all of the coilform or just a portion of the coilform. As the coilform is rotated, the electrical conductor is engaged in the threads, changing the shape of the coil, and thereby also changing the inductance of the coil.

Abstract: Methods and apparatus are disclosed for a tunable inductor. A coil of electrically conducting material is wrapped around a coilform, preferably generally cylindrical in shape. The coilform is constructed having a threaded portion of screw-like ridges with troughs between the ridges. The coilform may also have an unthreaded portion. The ridges and troughs of the threaded portion may run along substantially all of the coilform or just a portion of the coilform. As the coilform is rotated, the electrical conductor is engaged in the threads, changing the shape of the coil, and thereby also changing the inductance of the coil.

Abstract: A device for piercing a cable includes a first clamp member and a second clamp member. The first clamp member and the second clamp member are superposed relative to each other. A conductive piercing member is disposed on the first clamp member. The device further includes an arrangement for moving the first clamp member and the second clamp member together. As the first clamp member and the second clamp member are moved together, a distance between the conductive piercing member and the second clamp member is reduced.

Abstract: A device for piercing a cable includes a first clamp member and a second clamp member. The first clamp member and the second clamp member are superposed relative to each other. A conductive piercing member is disposed on the first clamp member. The device further includes an arrangement for moving the first clamp member and the second clamp member together. As the first clamp member and the second clamp member are moved together, a distance between the conductive piercing member and the second clamp member is reduced.

Abstract: Concurrent maintenance of an electronic system, such as a computer system, is performed in the presence of potentially disruptive Electromagnetic Interference (EMI) by shrouding components within the computer system with a grounded, electromagnetic shielding sheet. In particular, Radiated Electromagnetic Susceptibility (RES) of the computer system is protected when an opening formed in an enclosure of the computer system is shrouded by the electromagnetic sheet. Slits or openings are formed in the sheet to allow access to the components within the shielded system. The sheet is formed of a static shielding polymer with a thin metal layer, and is grounded with an attached grounding member.