Pressure-only molten metal valving apparatus and method

Details Pressure-only molten metal valving apparatus and method Pressure-only molten metal valving apparatus and method

2006-07-28

2008-07-22

Johnson, Jonathan (Department: 1793)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S306000, C228S033000

Reexamination Certificate

active

07401637

ABSTRACT:
A new pressure-only molten metal valving apparatus and method is provided. This novel approach to controlling the flow of liquids eliminates the need for active, moving valve components. Using the natural surface tension properties of liquids, the gas pressure either activates liquid flow when a threshold is overcome or retains the liquid in a head, even when lifted.

REFERENCES:
patent: 5244143 (1993-09-01), Ference et al.
patent: 5364011 (1994-11-01), Baker et al.
patent: 6527158 (2003-03-01), Brouillette et al.
patent: 7131565 (2006-11-01), Gruber et al.

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