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Oldham's coupling

noun
Old·​ham's coupling | \ ˈōldəmz-\

Definition of Oldham's coupling

: a coupling for parallel shafts slightly out of line consisting of a disk on the end of each shaft and an intermediate disk having two mutually perpendicular feathers on opposite sides that engage slots in the respective shaft disks

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History and Etymology for Oldham's coupling

from the name Oldham

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