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Patent Searching and Data


Title:
MOLD PUMP ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2012/145381
Kind Code:
A4
Abstract:
A molten metal pump assembly (10) and method to fill complex molds with molten metal, such as aluminum. The pump assembly includes an elongated shaft (16) connecting a motor (14) to an impeller (22). The impeller is housed within a chamber (18) of a base member such that rotation of the impeller draws molten metal into the chamber at an inlet (48) and forces molten aluminum through an outlet (50). A first bearing (36) is adapted to support the rotation of the impeller at a first radial edge (32) and a second bearing (38) is adapted to support the rotation of the impeller at a second radial edge. A bypass gap (60) is interposed between the second bearing and the second radial edge. Molten metal leaks through the bypass gap at a predetermined rate to manipulate a flow rate and a head pressure of the molten metal such that precise control of the flow rate is achieved.

Inventors:
TIPTON JON (US)
Application Number:
PCT/US2012/034048
Publication Date:
March 28, 2013
Filing Date:
April 18, 2012
Export Citation:
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Assignee:
PYROTEK INC (US)
TIPTON JON (US)
International Classes:
F04D7/04; F04D7/06; F04D29/047
Attorney, Agent or Firm:
McCOLLISTER, Scott, A. (The Halle Building 5th Floor,1228 Euclid Avenu, Cleveland OH, US)
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