A dynamo electric machine for an aircraft gas turbine engine includes a housing supporting a stator of the dynamo electric machine, a rotor assembly rotatably mounted in the housing and including an elongate hollow rotor shaft, a main shaft for connection at one end to the associated gas turbine eng
A dynamo electric machine for an aircraft gas turbine engine includes a housing supporting a stator of the dynamo electric machine, a rotor assembly rotatably mounted in the housing and including an elongate hollow rotor shaft, a main shaft for connection at one end to the associated gas turbine engine assembly, said main shaft extending coaxially within said hollow rotor shaft, and a sleeve-like member of electrically insulating material between said rotor shaft and said main shaft, said sleeve-like member providing an electrically insulating driving connection between said main shaft and said rotor shaft whereby said main shaft and said rotor shaft rotate together.
대표청구항▼
The invention claimed is: 1. A dynamo electric machine for an aircraft gas turbine engine including a housing supporting a stator of the dynamo electric machine, a rotor assembly rotatably mounted in the housing and including an elongate hollow rotor shaft, a main shaft for connection at one end to
The invention claimed is: 1. A dynamo electric machine for an aircraft gas turbine engine including a housing supporting a stator of the dynamo electric machine, a rotor assembly rotatably mounted in the housing and including an elongate hollow rotor shaft, a main shaft for connection at one end to the associated gas turbine engine assembly, said main shaft extending coaxially within said hollow rotor shaft, and, a sleeve-like member of electrically insulating material between said rotor shaft and said main shaft, said sleeve-like member providing an electrically insulating driving connection between said main shaft and said rotor shaft whereby said main shaft and said rotor shaft rotate together, wherein a large diameter washer of an electrically insulating material is carried adjacent one end of the main shaft. 2. A machine according to claim 1, wherein the sleeve-like member has an outer surface of non-circular cross-sectional shape, the inner surface of the adjacent part of the rotor shaft being of substantially the same non-circular shape. 3. A machine according to claim 2, wherein the said non-circular cross-sectional shape is a square section. 4. A machine according to claim 3, wherein the corners of the square cross-section are rounded. 5. A machine according to claim 1, wherein the sleeve-like member has an inner surface of non-circular cross-sectional shape, the outer surface of the adjacent part of the main shaft being of substantially the same non-circular shape. 6. A machine according to claim 5, wherein the said non-circular cross-sectional shape is a square section. 7. A machine according to claim 6, wherein the corners of said square cross-section are rounded. 8. A machine according to claim 1, further comprising a spring loaded dampener assembly. 9. A machine according to claim 8, wherein ceramic layers are interposed between components of the spring loaded dampener assembly and the rotor and main shafts. 10. A dynamo electric machine for an aircraft gas turbine engine including a housing supporting a stator of the dynamo electric machine, a rotor assembly rotatably mounted in the housing and including an elongate hollow rotor shaft, a main shaft for connection at one end to the associated gas turbine engine assembly, said main shaft extending coaxially within said hollow rotor shaft, and, a sleeve-like member of electrically insulating material between said rotor shaft and said main shaft, said sleeve-like member providing an electrically insulating driving connection between said main shaft and said rotor shaft whereby said main shaft and said rotor shaft rotate together, wherein the sleeve-like member has an outer surface of non-circular cross-sectional shape, the inner surface of the adjacent part of the rotor shaft being of substantially the same non-circular shape, and wherein a large diameter washer of an electrically insulating material is carried adjacent one end of the main shaft. 11. A machine according to claim 10, wherein the said non-circular cross-sectional shape is a square section. 12. A machine according to claim 11, wherein the corners of the square cross-section are rounded. 13. A machine according to claim 10, wherein the sleeve-like member has an inner surface of non-circular cross-sectional shape, the outer surface of the adjacent part of the main shaft being of substantially the same non-circular shape. 14. A machine according to claim 13, wherein the said non-circular cross-sectional shape is a square section. 15. A machine according to claim 14, wherein the corners of said square cross-section are rounded. 16. A machine according to claim 10, further comprising a spring loaded dampener assembly. 17. A machine according to claim 16, wherein ceramic layers are interposed between components of the spring loaded dampener assembly and the rotor and main shafts.
Ade Rolf (Bietigheim-Bissingen DEX) Heimann Heinz (Bietigheim-Bissingen DEX) Kofink Wolfgang (Aichwald-Lobenrot DEX) Prohaska Hans (Bietigheim-Bissingen DEX), Electric small-size motor comprising an armature secured with plastic material.
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