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Vortexer apparatus

ActiveUS20060180963A1Facilitates submergence and meltingMaintain temperatureStirring devicesCharge manipulationImpellerPositive pressure
The present invention features a vortexer apparatus including a vessel comprising an exterior surface, an interior surface containing fluid and a mouth for receiving material at an upper end portion of the interior surface. In one application the material is metal scrap that is melted in molten metal as the fluid. All components that contact the molten metal are formed of refractory material. An outlet passageway extends downwardly from the interior surface. A vessel inlet opening is located between the exterior and interior surfaces above the outlet passageway. A center line passes through a center of the interior surface and the vessel inlet opening is disposed at a location offset from the center line. A pump is adapted to pump fluid into the vessel effective to form a vortex of fluid in the vessel. The base and impeller are configured and arranged effective to provide molten metal leaving the base outlet with a positive pressure. An outlet conduit extends from the base outlet to near the vessel inlet opening and can be maintained at a temperature above which molten metal solidifies, along its entire length. Instead of the vortexer vessel, the inventive vortexer apparatus may integrate a chamber of a furnace (e.g., a charge well). The chamber may be rectangularor include arcuate portions. Corner inserts may be used to provide the chamber with an oval or generally circular shape that may facilitate the vortex. One feature of the invention is a vortex vessel that includes an offset inlet opening and lower circulation opening. Also featured is a baffle impeller that may be vaned or barrel type. In addition, the invention features a pump having upper and lower impeller chambers separated by a web in the base, and impeller outlets that are isolated from fluid communication with each other.
Owner:THUT BRUNO H

Teatcup liner

InactiveUS20100089326A1Limited resistanceDifficult to removeMilking devicesPacifierInterior space
A teatcup liner adapted to be mounted in a shell to form a teatcup to be applied to a teat of an animal, and a method of mounting a teatcup liner. The liner defines an inner space for receiving the teat and a longitudinal centre axis. The liner has a head portion, a tubular barrel portion and, a tubular lower portion defining a milk channel having a cross-section area perpendicular to the centre axis. The tubular lower portion has a primary engagement member to be engaged by a secondary engagement member of the shell. The liner includes a grip member extending from the tubular lower portion to be gripped by an operator when the liner is to be mounted. The grip member defines a force application zone on which a pulling force is to be applied and which seen along the centre axis is located within the cross-section area.
Owner:DELAVAL HLDG AB
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