Abstract: A single-cam compound archery bow that includes a bow handle from which bow limbs project, a control wheel rotatably mounted on one end of one limb and a power can rotatably mounted at an opposing end of the other limb. A power cable segment is anchored at one end to the one limb and at a second end to the power can at a position to wrap into and unwrap from a power cable groove on the power cam. A bow string cable segment is anchored to the control wheel and to the power cam at positions to wrap into and unwrap from first and second bow string take-up grooves on the control wheel and power cam respectively. The bow string cable segment has a nock point disposed between the spaced limb ends. A control cable segment is anchored at one end to the control wheel at a position to wrap into and unwrap from a control groove on the control wheel, and is anchored at an opposing end to the power cam.

Abstract: Air emboli detection method and apparatus for use in cardiopulmonary bypass surgery or the like comprising modular sensor, control and power units. The sensor unit is adapted to releasably clamp a blood flow tubing or conduit in a vertical orientation below a blood deaerator, and includes an LED infrared source and a phototransistor detector. The control unit applies pulsed power to the light source only at preselected periodic intervals, and monitors for an output from the detector only at times corresponding to the preselected intervals to achieve an enhanced signal-to-noise ratio. The power unit includes a solid state relay responsive to detection of emboli for removing power from a blood pump or the like.