Abstract: A rotary electric machine including a stator, a rotor journalled for rotation relative to the stator about an axis of rotation and carrying electrical windings. The rotor includes a fluid inlet spaced from a fluid outlet and a cooling liquid flow path is located in the rotor interconnecting the inlet and the outlet. The liquid flow path is in heat relationship to the windings and at least a part thereof is displaced from the axis of rotation. A gas vent passage is disposed in the rotor to interconnect the inlet and the outlet and is located on the axis of rotation to thereby prevent gas bubbles tending to build from air entrained in the coolant on the axis of rotation.

Abstract: A centrifugal filter for a high speed electrical machine of the type having a fluid flow path through its rotor. The centrifugal filter includes an enlargement at the beginning of the flow path through the rotor and which extends radially outwardly of the axis of rotation. As a consequence, contaminants in an incoming fluid stream are subjected to centrifugal force during operation of the machine and moved thereby radially outwardly within the enlargement so as to be out of the fluid stream. Consequently, the fluid stream, after separation of the contaminants therefrom within the enlargement by centrifugal force, may be passed with safety through the rotor for cooling and/or lubricating purposes.

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: 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: This invention relates to a current transformer support assembly for use in an electromotive machine that includes an armature slideably secured to the electromotive machine housing. The armature end windings have radially disposed neutral armature conductors. The support assembly includes an arcuate shaped support member secured internally of the housing within a recessed region of the housing. The arcuate shaped support member is provided with at least one well shaped opening in which a secondary current transformer winding is positioned. A neutral armature assembly is provided that includes an arcuate strap secured in a mating manner to the support member. The neutral armature assembly has a neutral lead which acts as a primary for the current transformer. The neutral lead is secured to the strap and passes through a central opening in the current transformer winding for electrical connection to a neutral armature winding. The current transformers so mounted are completely supported by the housing.