| 摘要 |
A shaft is coupled to a hub by means of a resilient,helical, wire coil threadedly received in matching grooves formed externally on a cylindrical shaft section and internally within a cylindrical opening in the hub. The land sections between respective grooves in the shaft section and in the hub opening are of substantial extent and closely engage one another. A tight, torque-transmitting coupling is afforded, which coupling is capable of ready assembly and disassembly.
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