Ignition apparatus and a heating tool
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United States of America Patent
Stats
-
Jun 30, 1998
Grant Date -
N/A
app pub date -
Jan 16, 1996
filing date -
Jul 16, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A soldering tool (1) comprising a main housing (2) within which is located a fuel gas reservoir (4). A soldering body member (5) terminates in a rearwardly extending combustion chamber (11) within which is located a gas catalytic combustion element (14). A gas/air mixture is delivered through a jet outlet (21) where it is initially burnt with a flame in a flame combustion chamber (24) for raising the catalytic combustion element (14) to its ignition temperature. A piezoelectric ignition element (50) provides a spark across a spark gap (56) adjacent an electrode (55) for igniting the gas/air mixture to burn with a flame. An interrupt member (67) located downstream of a nozzle bore (28) temporarily interrupts the flow of fuel gas to the jet outlet (21) for extinguishing the flame after the catalytic combustion element (14) has been raised to its ignition temperature. A slidable actuator member (60) in the housing (2) sequentially operates the piezoelectric ignition element (50) and the interrupt member (67).
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International Classification(s)
Cited Art Landscape
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