Importance

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Abstract

Driven-magnet assemblies are disclosed for use in magnetically actuated pumps such as gear pumps. An exemplary assembly includes a magnet-flux-ring assembly and a molded body. The magnet-flux-ring assembly includes a flux ring having inner and outer surfaces that are concentric around an axis, and multiple magnet segments at respective radial positions around the axis. Each magnet segment has a respective inner surface, outer surface, first end, second end, and lateral sides. The inner surfaces are attached side by side to the outer surface of the flux ring around the flux ring. The outer surfaces form an outer surface of the assembly. The molded body has at interior portion, a first end, and a second end. The interior portion is situated radially inwardly of, and attached to, the inner surface of the flux ring. The first end is integral with the interior portion and captures the first ends of the magnet segments relative to the flux ring. The second end is integral with the interior portion and configured to capture the second ends of the magnet segments relative to the flux ring. The outer surface of the assembly is substantially bare.

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First Claim