Abstract: A belt drive system for rotatably coupling an internal combustion engine to an electric machine is described. The belt drive system includes a serpentine belt and a hydraulic strut tensioner, wherein the hydraulic strut tensioner is disposed to exert a tension force on the serpentine belt. A controller is operatively connected to the electric machine and includes an instruction set that is executable to periodically induce a reduction in torque output of the electric machine.

Abstract: A belt drive system for rotatably coupling an internal combustion engine to an electric machine is described. The belt drive system includes a serpentine belt and a hydraulic strut tensioner, wherein the hydraulic strut tensioner is disposed to exert a tension force on the serpentine belt. A controller is operatively connected to the electric machine and includes an instruction set that is executable to periodically induce a reduction in torque output of the electric machine.

Abstract: An image-forming apparatus includes one or more shutters that selectively permit passage of light.

Abstract: A relative position derivation, sensing and indicator system primarily adapted for conventional elevators. The system displays elevator position and travel direction at each floor with a relatively old fashioned appearing indicator apparatus including an "antique" faceplate and a simple rotatable pointer arm driven by a stepper motor assembly. Electronic solid state digital circuitry is employed to derive suitable control signals for driving the associated stepper motors which rotate the pointer arms associated with each position displayed. A plurality of vanes vertically aligned within the hoistway are provided with parallel, offset rows of perforations. A generally U-shaped vane reader traveling with the elevator car establishes a pair of rapidly pulsed, oppositely directed infrared light beams across a void-like channel formed between its sides.