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US 12,410,800 B2Granted
Coupling and rotor shaft for molten metal devices
AssigneeMolten Metal Equipment Innovations, LLC
InventorPaul V. Cooper
Life of this patent
Estimating the term…
Abstract
A coupling has an opening and a protrusion extending downward from the opening. The protrusion has threads that are preferably positioned outside of the opening. A rotor shaft that connects to the coupling has an internal bore with threads that receives and retains the protrusion, such as by a threaded connection between the two, so the protrusion applies driving force to the shaft.
Claims11
A rotor shaft configured to connect to a coupling, the rotor shaft comprising:
- a first end configured to connect to the coupling, the first end comprising (a) an outer surface having a chamfer that is configured to be received in a cavity of the coupling, and (b) an internal bore, wherein there are no threads in the internal bore at the position of the chamfer and there are threads in the internal bore only beneath the position of the chamfer, wherein the threads are configured to receive threads of a protrusion extending from an opening of the coupling in order to be threadingly connected to the protrusion.
Dependencies are inferred from the claim text.