Abstract: A connector support block has a recess defined in part by an arcuate surface for limiting deflection of a main lead connector coupled between the main lead terminal and the innermost turn of end coils on a generator. The recess is spanned by a pin displaceable in elliptical openings in flanges defining the recess and about which pin the main lead connector makes a 180.degree. bend. By limiting the deflection of the main lead connector, stresses introduced into the main lead connector at the 180.degree. bend, a 90.degree. bend and the joint between the main lead connector and innermost turn are reduced under cyclic loading whereby increased fatigue life of the main lead connector is provided.

Abstract: An ultrasonic transducer for use in nondestructive testing includes a multi-transducer array mounted on a wedge, the wedge including a surface substantially contoured to conform to a sensing surface to be tested. At least the surface is covered by a silicone rubber material cast as a tubular sleeve which has the following properties:tensile strength--600 psitear strength--135 psisound velocity--1,000 m/sdensity--1,200 kg/m.sup.3Shore A Durometer--16.

Abstract: Each cooling pad includes a plurality of concentric cooling robes (24) prefabricated and cast within the cooling pad (20). The robes are formed of stainless steel and, prior to casting, are coated by a plasma spray process with aluminum to ensure an integral bond between the cast and sprayed aluminum and hence between the robes and the east pad to minimize or eliminate voids between the cooling robes and aluminum cooling pad. The inlets (26) and outlets (28) of the robes are coupled to inlet and outlet manifolds (32, 34), respectively, along the outer periphery of the cooling pad. The cooling pad is interspersed between stator core laminations and supplied with deionized water whereby the cooling pads cool the stator core.

Abstract: In a dynamoelectric generator, a low-resistance electrical contact is provided by using a spring below the rotor slot wedges to bias the wedges against the overlapping retaining rings. This biased contact between the wedges and retaining rings forms a conductive current path for high-frequency eddy currents induced on the surface of the rotor and retaining rings at all operating speeds and at rotor standstill. In addition, the spring reduces gauling between the rotor key slots, wedges and retaining ring.

Abstract: A connector design for connecting rotor coil end turns and an exciter/rectifier assembly to a rotor bore copper conductor in a dynamoelectric machine. The design includes a terminal stud or pin sized to be closely received in a telescoping manner in a cylindrical receptacle which is fixedly attached to the rotor windings. A similar cylindrical receptacle extends from the other end of the rotor toward the exciter/rectifier assembly. The stud or pin in each case is also modified to include grooves for accepting resilient, sliding electrical contacts so that a resilient electrical contact is obtained when the stud is positioned within the receptacle. The connector elements are also sufficiently rigid as to withstand shock, centrifugal forces at operational speeds, and rotation direction reversal, but which also allows sufficient radial and axial movement to accommodate coil movement associated with rotor temperature and speed changes while simultaneously maintaining a low resistance current path.

Abstract: An epoxy powder is electrostatically charged and spray-coated onto the series loop connections 16, 18 of a dynamoelectric machine. With the series loop connections grounded, the electrostatically charged particles adhere to the connections and wrap about the front, back and sides of the connections to provide a substantially uniform thickness or build-up of the electrically insulating epoxy powder. With the series loop connections preheated, the epoxy will begin to melt and flow, further ensuring a uniform build-up and thickness about the connections. The spray-coating is then heat-cured, thereby affording electrically insulated series loop connections at the opposite ends of the dynamoelectric machine.

Abstract: In a dynamoelectric generator, a low-resistance electrical contact is provided by a cantilever beam mounted between the outer surface of the rotor body and an overlapping retaining ring. This cantilever beam is part of the wedges in the rotor body and provides a conductive current path for high-frequency eddy currents induced on the surface of the rotor and retaining rings at all operating speeds.