Abstract: A rotor assembly including first and second generally discoidal endshafts disposed at opposite ends of the rotor assembly, an electromagnetic core and winding assembly secured between the endshafts, and a generally annular sleeve member shrunk-fit onto the end shafts in a position surrounding the electromagnetic core and winding assembly. The torque is transmitted through the sleeve member between the endshafts during operation of the dynamoelectric device in which the rotor is employed. A method of assembling the rotor is also disclosed in which the electromagnetic core and winding assembly is bolted between the endshafts. The sleeve member is heated to a temperature between 900.degree. and 1,000.degree. F., the sleeve member is brought into a position over the endshafts, and subsequently allow to cool to ambient temperature to shrink into locking engagement with the endshafts.

Abstract: The high cost of fabricating a rotating rectifier assembly may be reduced in a construction including first and second tubular, generally cylindrical housing sections (12), (14), of insulating material in end to end abutment. Each of the sections (12), (14), has an interior wall (28), (40) including an elongated, inverted T-shaped slot (60) with the slot (60) in one of the sections (12) being circumferentially spaced from the slot (60) and the other of the sections (14) by about 180 degrees. Elongated buses (70) are located in the widest part of each of the slots (60) and each includes plural packaged diode mounting apertures (72). Packaged diodes 74 have combination terminal/mounting posts (76) located in a corresponding aperture (72) and further include an opposite terminal (80) extending to the interior wall (28), (40) opposite the corresponding slot (60). Fasteners (78) within the slots (60) secure the combination terminal/mounting posts (76) to the corresponding bus (70) in electrical contact therewith.

Abstract: The effects of operational loading on a permanent magnet generator of the type having first and second permanent magnet assemblies 28, 30 mounted on a shaft 26, and movable relative to each other is eliminated by rotatably mounting each of the assemblies 28, 30 for rotation relative to the shaft 26, as well as to each other, and connecting them to the shaft by equal, but oppositely pitched helical spline connections 50, 52, 58, 60. Axial movement of the shaft 26 will then cause equal, but opposite relative movement of the permanent magnet assemblies 28, 30, so that the forces resisting movement of one such assembly act to encourage movement of the other, thereby balancing out said forces.

Abstract: A high speed shaftless rotor construction is disclosed including a method of sequentially building up the rotor to facilitate disassembly for reworking and maintaining precise alignment of the reassembled elements. End turn supports are matched and preliminarily assembled with bolts to the core and the parts machined to achieve desired tolerances. After machining, the end turn supports are separated from the core, matched with end shaft fittings and additional machining carried out, after which the turn supports are separated from the end shaft fittings and reattached with the core. The shaft fittings are realigned with the assembled end support fittings and bolted into position after which final machining can be completed. All elements are then disassembled and the parts deburred and cleaned to eliminate any contamination prior to winding the field coil.

Abstract: An in-line integrated drive generator including a constant speed drive unit having an input shaft defining an axis, an output including a differential on the axis and a control interconnecting the input shaft and the output to cause the output to rotate at a constant speed independent of the speed of a prime mover connected to the input shaft. A brushless generator assembly having a main field structure and an exciter rotor are disposed on the axis and are connected to the output to be driven thereby. A permanent magnet generator for energizing the exciter includes a permanent magnet assembly rotatable about the axis and contained within the constant speed drive unit. The invention provides an in-line drive generator with minimal frontal area as well as a shortened axial length.

Abstract: According to the invention, a rotor is provided having a cylindrical core and a protective can closely fit and secured with the core. The core is provided with two axially spaced, annular reliefs spaced inwardly from points of welding which secure the can and core and connected by at least two circumferentially spaced, axial reliefs. To effect removal of the can, a cutting tool is extended through the can along the extent of the reliefs. With the cuts completed, access sections are defined and are separable from the core. The remainder of the can, including the weld material, can be machined off using conventional techniques.

Abstract: A high speed shaftless rotor construction is disclosed including a method of sequentially building up the rotor to facilitate disassembly for reworking and maintaining precise alignment of the reassembled elements. End turn supports are matched and preliminarily assembled with bolts to the core and the parts machined to achieve desired tolerances. After machining, the end turn supports are separated from the core, matched with end shaft fittings and additional machining carried out, after which the turn supports are separated from the end shaft fittings and reattached with the core. The shaft fittings are realigned with the assembled end support fittings and bolted into position after which final machining can be completed. All elements are then disassembled and the parts deburred and cleaned to eliminate any contamination prior to winding the field coil.

Abstract: A rotary electric machine including a housing having a stator. The stator includes an armature winding with end turns extending from opposite ends thereof. A rotor is journalled within the housing and the stator and is separated from the stator by an air gap. At least two nozzles are located within the housing, one adjacent each end of the armature, and directed at an associated set of end turns. A pair of partitions are disposed within the housing, one for each end of the armature. Each partition is located axially outwardly of the associated end turns and nozzle. A first air gap seal includes a resilient gasket sealingly engaging a corresponding one of the partitions and the tips of the adjacent end turns while a second air gap seal includes sheet-like seals interposed between layers of the end turns.

Abstract: According to the invention, a rotor is provided having a cylindrical core and a protective can closely fit and secured with the core. The core is provided with two axially spaced, annular reliefs spaced inwardly from points of welding which secure the can and core and connected by at least two circumferentially spaced, axial reliefs. To effect removal of the can, a cutting tool is extended through the can along the extent of the reliefs. With the cuts completed, access sections are defined and are separable from the core. The remainder of the can, including the weld material, can be machined off using conventional techniques.