Importance

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Abstract

In a coupling arrangement of the hub-shaft type, at least one of hub and shaft includes two sections, these two sections being connected by an intermediate flexible section. The flexibility of the intermediate section is attained by circumferentially provided helical slots. The flexible intermediate section twists the twistable section relative to the fixed section if a nut is screwed on the terminal thread with increasing torque. Thereby, any play existing in the coupling, i.e. between the flutes of hub and shaft, is removed. By further increasing the torque, the coupling is even backlash-free in both rotational directions up to at least the torque excess.

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First Claim