Burner structure and method of manufacture
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United States of America Patent
Stats
-
Apr 1, 1980
Grant Date -
N/A
app pub date -
Nov 13, 1978
filing date -
Nov 13, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a burner tube having burner ports formed by a series of struck-in tabs, improved structure wherein the tabs have trapezoidal shape to increase the amount of unsevered metal supporting each tab, each tab being formed by cutting through the tube wall along a line perpendicular to the tube axis and then simultaneously bending the tab inwardly and severing the tube wall from the ends of the cut along lines which converge in an outward direction.
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