Slip ring and method of manufacturing slip ring
OwnerDavid Paul Queener, Richard A. Meadinventors
Life of this patent
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Abstract
A slip ring for a rotary electric machine includes a cylindrical ring of electrically conductive material. The ring has a generally smooth outer surface and a patterned inner surface. A core of thermosetting material is at least partially received in the cylindrical ring. The core has a through opening receivable on a rotor of a rotary electric machine and a patterned outer surface mating with the cylindrical ring patterned inner surface to secure the cylindrical ring to the core.
Claims27
A slip ring for a rotary electric machine comprising:
- a cylindrical ring of electrically conductive material, the ring having a generally smooth outer surface and a patterned inner surface;
- and
- a core of thermosetting material at least partially received in the cylindrical ring, the core having a through opening receivable on a rotor of a rotary electrical machine, in use, and a patterned outer surface mating with the cylindrical ring patterned inner surface to secure the cylindrical ring to the core.
A slip ring for a rotary electric machine comprising:
- first and second cylindrical rings of electrically conductive material, each ring having a generally smooth outer surface and a patterned inner surface;
- a core of thermosetting material at least partially received in the cylindrical rings to support the rings coaxial to one another, the core having a through opening receivable on a rotor of a rotary electrical machine, in use, and a patterned outer surface mating with the cylindrical ring patterned inner surfaces to secure the cylindrical rings to the core;
- and
- first and second terminals electrically connected to the respective first and second rings and extending through the core for connecting to the rotary electrical machine.
A method of fabricating a slip ring for a rotary electric machine comprising:
- providing an elongate ribbon of electrically conductive material having generally smooth surfaces;
- forming a pattern on one of the ribbon surfaces;
- severing a length of the patterned ribbon and shaping the severed length into a cylinder with the patterned surface on an inner wall of the cylinder;
- and
- molding a core of thermosetting material at least partially in the cylinder, the core having a through opening receivable on a rotor of a rotary electrical machine, in use, and a patterned outer surface mating with the cylinder patterned inner surface to secure the cylinder to the core.
Dependencies are inferred from the claim text.