Bearing arrangement for molten aluminum pumps
First Claim
1. A molten metal pump comprised of a rotary shaft of refractory material connecting a motor and an impeller with neither the shaft nor the impeller having a radial bearing surface, the impeller housed within a pumping chamber of a base member wherein rotation of said shaft and impeller draws molten aluminum into said chamber and forces molten aluminum through an outlet in said chamber, said motor being secured to said shaft by a rigid coupling and at least one bearing journaling said coupling.
4 Assignments
0 Petitions
Accused Products
Abstract
A molten aluminum pump comprised of an impeller attached to a vertical rotary shaft, the shaft forming a connecting portion between a motor and the impeller and being comprised of a refractory material without a radial bearing surface. The impeller is housed within a pumping chamber of a base member wherein rotation of the shaft and impeller draws molten aluminum into the chamber and forces the molten aluminum through an outlet in the chamber. The motor is secured to the shaft with a rigid coupling and at least one bearing journaling the coupling.
142 Citations
14 Claims
- 1. A molten metal pump comprised of a rotary shaft of refractory material connecting a motor and an impeller with neither the shaft nor the impeller having a radial bearing surface, the impeller housed within a pumping chamber of a base member wherein rotation of said shaft and impeller draws molten aluminum into said chamber and forces molten aluminum through an outlet in said chamber, said motor being secured to said shaft by a rigid coupling and at least one bearing journaling said coupling.
- 11. A molten aluminum pump comprised of a rotary shaft of refractory material connecting a motor and an impeller, the impeller, free of a radial bearing surface being housed within a pumping chamber of a base member wherein rotation of said shaft and impeller draws molten aluminum into said chamber and forces molten aluminum through an outlet in said chamber, said motor being secured to said shaft by a rigid coupling and at least one bearing journaling said coupling.
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14. A molten aluminum pump comprised of a rotary shaft of refractory material connecting a motor and an impeller, the impeller housed within a pumping chamber of a base member wherein rotation of said shaft and impeller draws molten aluminum into said chamber and forces molten aluminum through an outlet in said chamber, said motor being secured to said shaft by a rigid coupling and at least one bearing journaling said coupling, said shaft being free of a radial bearing surface.
Specification