Dispensing – Processes of dispensing – Molten metal
Reexamination Certificate
2005-02-08
2005-02-08
Kastler, Scott (Department: 1742)
Dispensing
Processes of dispensing
Molten metal
C222S591000, C222S594000, C164S046000
Reexamination Certificate
active
06851587
ABSTRACT:
An apparatus for forming three-dimensional objects includes a crucible (1) for holding a molten material; a conically-shaped orifice (1a) having a fixed outlet diameter (d0) at the bottom of the crucible through which a jet (50) of the molten material flows towards the substrate; and an oscillating mechanical member (5) for breaking the flow of molten material into the molten material drops (60). The oscillating mechanical member further includes a conically-shaped head (5a) for cooperating with the orifice (1a) and for varying the effective size of the orifice. The conically-shaped head includes a slanted radial portion (5c) and a tip portion (5b) extending through the orifice. The effective diameter (deff) of the jet is defined by the relationship deff=[d02−(d0−δ tan θ)2]1/2, wherein δ represents the amount of the tip portion extending through the orifice, and θ represents a slant angle corresponding to the slanted radial portion of the conically-shaped head.
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Arizona Board of Regents
Baker & Botts L.L.P.
Kastler Scott
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