Patent ID: 6977059
Filing Date: 2005-12-20
Classification: C21C,F16D,F27D

Abstract:
1. A coupling system for use in molten metal processing in attaching a shaft to a drive system, the coupling system comprising: a coupling with a first end configured for operational attachment to a drive system, and a second end with an open inner cavity configured to receive an elongated shaft, the inner cavity including a plurality of discontinuous threads patterned to rotationally engage external threads on the elongated shaft; a shaft with an elongated body having a first end and a second end, the first end being configured to be coupled to a drive and the second configured for coupling to a molten metal processing component; wherein the first end includes a plurality of parallel threads configured for engagement with a plurality of corresponding discontinuous threads, and further wherein the plurality of parallel threads each extend less than one revolution around the shaft.