Abstract: An eddy current coupling has rotating and non-rotating flux paths to use the rotating portions as both magnetic and mechanical members, reduce physical dimensions of the coupling, and improve heat dissipation from the coil.The coupling (10) has an inductor (20) mounted on the input shaft. A magnetic rotor (22) is mounted on the output shaft with poles (30, 32) spaced from the inductor. A field coil (36) is positioned radially inwardly from the rotor and generates a flux, causing torque transmission between the inductor and rotor.A stationary field coil support (38) is mounted in proximity to the rotor poles for providing a stationary flux return path between the poles. The support is positioned with respect to the rotating element of the coupling, so that these elements may provide a rotating flux return path in parallel with the stationary flux path of the support.

Abstract: A x-ray tube housing assembly is disclosed which includes a manifold for distributing incoming coolant within the housing in the area adjacent the hot zone of the x-ray tube. The manifold preferably comprises a generally tubular conductor circumferentially disposed about a first axis which is generally parallel to the axis of the tube housing.

Abstract: A stationary microwave leakage detector and method for testing microwave ovens for the maximum power density of microwaves leaking through the oven's door seals. The leakage detector is composed of an array of antennae arranged in a line generally circumscribing the circumference of the door at a fixed distance therefrom. The antennae are spaced apart a predetermined maximum distance thus insuring that a given antennae will sense at least a portion of the narrowest possible beam of microwaves emitting from the periphery of the door. Furthermore, the spacing and arrangement of the array vis-a-vis the oven door insure that the minimum power density observed by an antenna is a known ratio of the maximum power density of a narrowest beam possibly incident thereon, thus providing a means to guarantee from the measured power density levels that there are no microwaves leaking from the oven under test greater than a certain maximum power density.