Abstract: The present invention provides a cleaning member which can be produced at low cost and which maintains excellent cleaning performance for a long period of time. The cleaning member includes a core member, a lower layer formed through winding a cord member around the core member at the surface thereof, and an upper layer provided on the outer surface of the lower layer. The upper layer is formed of at least one fiber layer made of woven fabric or knitted fabric.

Abstract: In a method of corona discharge processing of resin formings surface, excellent corona discharge processing is possible, even if there is a distance between the resin formings and the discharge electrode, by generating a high voltage pulse having a pulse width of 1 .mu.s or more, an average electric field strength of 4 to 20 kv/cm denoted by applied voltage (wave height) versus interelectrode distance, and a pulse frequency of 10 pps or more. This processing is performed by the apparatus which comprises arranging a transfer conveyor to transfer the resin formings, a counter-electrode placed in a down side of the transfer conveyor, a dielectric to cover a surface of the counter-electrode, and a number of discharge electrodes which are arranged in a definite distance above the resin formings along the transfer route.

Abstract: An injection molding apparatus includes first and second injection molding units, which are juxtaposed, for independently executing injection molding operations, and a placing station which is disposed between the first and second injection molding units, and to which a used injection-molding metal mold detached from each of the first and second injection molding units is conveyed to be commonly placed thereon.

Abstract: A motor control apparatus comprises an electric reversible motor, a movable member mechanically connected to the motor, first and second electroconductive bridge members rigidly mounted on the movable member, a plurality of switches, electroconductive feelers equal in number to the number of the switches, a first circuit for supplying an electric power to the first bridge member and also to the motor to rotate the latter in one of the opposite directions when energized, and a second circuit for supplying the electric power to the second bridge member and also to the motor to rotate the latter in the other of the opposite directions when energized.

Abstract: An automobile electric system including an electrically operated device such as an air conditioning device which is controlled by a control switch and light devices such as head lights which are controlled by a light switch. The control switch is provided with an illuminating lamp which is adapted to indicate the switch positions and the location of the switch. A control circuit for the illuminating lamp is provided so that the lamp illuminates the control switch when the switch is actuated, with a sufficient brightness in day time to show that the switch is actuated, but with a moderate brightness in night time wherein the light switch is actuated. Further, in night time, the control switch is illuminated with a weak light when the control switch is not actuated only to indicate the location of the control switch.