The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 2018
Filed:
Apr. 18, 2012
Jon Tipton, Aurora, OH (US);
Jon Tipton, Aurora, OH (US);
PYROTEK, INC., Spokane, WA (US);
Abstract
A molten metal pump assembly () and method to fill complex molds with molten metal, such as aluminum. The pump assembly includes an elongated shaft () connecting a motor () to an impeller (). The impeller is housed within a chamber () of a base member such that rotation of the impeller draws molten metal into the chamber at an inlet () and forces molten aluminum through an outlet (). A first bearing () is adapted to support the rotation of the impeller at a first radial edge () and a second bearing () is adapted to support the rotation of the impeller at a second radial edge. A bypass gap () 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.