A compound shaft coupling having a flexible disk shaft, with two flexible disks or diaphragms, and a tie bolt shaft connecting two rigid or stiff shafts. One flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the first stiff shaft, while the other flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the tie bolt shaft which removably mounts the second stiff shaft. A quill shaft connects the two flexible disk diaphragms of the flexible disk shaft. The first stiff shaft can be a ho...
[ What we claim is:] [1.] A compound shaft for a permanent magnet turbogenerator, said compound shaft comprising:a flexible disk shaft having a pair of flexible disks and a quill shaft disposed between and connecting said pair of flexible disks; anda tie bolt shaft having a tie bolt with a generally cup shaped member at one end thereof and a threaded nut at the other end thereof;said permanent magnet turbogenerator having a permanent magnet shaft including a permanent magnet disposed within a permanent magnet sleeve rotatably supported by a pair of space...
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