G - Physics – 01 – F
Patent
G - Physics
01
F
G01F 11/28 (2006.01) B22D 39/06 (2006.01) G01F 13/00 (2006.01)
Patent
CA 2086879
ABSTRACT An apparatus for delivering a metered shot of molten metal from a dispensing vessel through a shot tube comprises: a dispensing vessel for holding molten metal and having a shot tube for discharge of the molten metal, a reservoir of gas for pressurizing the dispensing vessel, a variable regulator for regulating the flow of gas. The regulator has a backload for varying the pressure at which the regulator regulates the flow of gas. An exhaust vent vents the dispensing vessel to the atmosphere. A supply valves opens and closes the delivery of gas to the holding vessel. A controller (i) maintains the exhaust valve closed, opens the backload and the supply valve pressurizing the holding vessel until the molten metal is at a predetermined level in the shot tube, (ii) closes the backload fixing the delivery pressure and maintains the delivery pressure within the holding vessel for a predetermined period of time discharging molten metal out the shot tube, (iii) closes the supply valve and opening the exhaust vent terminating the discharge of the molten metal.
Aplin Jason
Meyer Henry
Gasmac Inc.
Gowling Lafleur Henderson Llp
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