Abstract: Vehicle having at least one non-driven wheel which, between outer and inner frame sections of the vehicle, can rotate about an axle arranged to be fixed against rotation and axially non-displaceable with respect to the frame sections, and the wheel having a wheel bearing arrangement which is arranged substantially without free play on the axle in such a way that the wheel is arranged with a respective spacing in the axial direction from the frame sections, the wheel bearing arrangement being clamped in between a radial projection formed at one end of the axle and a fixing arrangement fitted to the other end of the axle and comprising a bush arranged concentrically around the other end of the axle, and the axle being held non-displaceably in the axial direction with respect to the frame sections by means of the bush, the wheel bearing arrangement and the radial projection.

Abstract: An apparatus and method for attaching a wheel to an axle. The apparatus comprises a wheel with a hub for insertion into an indentation in the end of the axle and a non-cylindrically-symmetrical stud attached to the axle that is concentric with the axis of rotation of the wheel and axle, attaching the wheel to the axle.

Abstract: A cooling device for a portable electronic comprises a radiation plate and a fin for radiating the heat from the CPU. When the plug of an external power. supply is attached to the body of the portable electronic, the CPU may operate at a high clock frequency. The cooling device achieves a high cooling performance by operating a ventilation fan directed to the fin, for example. When the plug is removed from the body of the portable electronic, the CPU may operate at a low clock frequency. Power consumption can be reduced, so that the electric power stored in the built-in battery can be saved. The duration time of the operation can be extended. Calorific power generated at the CPU can also be reduced, so that the cooling device is adapted to suppress the rise in the temperature of the CPU without operation of the ventilation fan.

Abstract: A multiplex connector, which includes a first circuit for providing a reference voltage to a photoelectric comparator by means of a photoelectric operation so as to further control a charge/recharge-timer circuit; a second circuit comprising a pyroelectric infrared detector which is triggered by means of a change in ambient temperature for providing a signal through an amplifier circuit and a window-limited comparator to the charge/recharge-timer circuit for closing or opening a driving circuit to further control the load. Through full-wave rectification and current amplification, an electronic switching circuit is also provided to control the power supply to the load which is connected thereto in series.