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US 8,444,911 B2Granted
Shaft and post tensioning device
OwnerPaul V. Cooperinventor
Life of this patent
Estimating the term…
Abstract
A system for applying tension to a component for use in molten metal processing. Preferably, the component includes an outer core and at least one tension rod positioned partially within the outer core. The component is preferably elongated, such as a support post or an impeller shaft. The tension rod applies compression to the outer cover, which makes the outer cover more resistant to breakage if it strikes, or is stricken by, an object.
Claims20
A component for use in a molten metal pump, the component comprising:
- an outer core constructed of graphite or ceramic;
- a tension rod positioned at least partially inside the outer core, wherein the tension rod comprises at least one elongate metal cable and at least one, elongated metal rod, and applies an axial compressive force to the outer core in order to make the outer core less susceptible to breakage.
Dependencies are inferred from the claim text.