Vented shield system for a plasma arc torch
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United States of America Patent
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-
Feb 5, 2008
Grant Date -
Jan 6, 2005
app pub date -
Jul 26, 2004
filing date -
Feb 27, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Vented shield systems for plasma arc torches are provided that comprise a shield cup body defining a distal end portion, a vented retainer secured to the distal end portion of the shield cup body, and a shield cap secured to the vented retainer. The vented retainer defines at least one vent passageway that directs a flow of secondary gas inward toward the shield cap, and the vented shield system blocks at least a portion of molten metal from contacting components, such as a tip or nozzle, of the plasma arc torch. The shield cap may comprise a mechanized cap, a drag cap, a gouging cap, or a deflector cap, among others. Accordingly, various shield caps may be employed without removal or replacement of the vented retainer. The same vented retainer may be used throughout a variety of plasma arc torch applications.
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