Tubular drill mast
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United States of America Patent
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Sep 28, 1999
Grant Date -
N/A
app pub date -
Jun 24, 1997
filing date -
Jun 28, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A drill mast has two tubular side chords and a central chord equally spaced from the side chords. The central chord is joined to the side chords by transverse and diagonal tubular lacing members. Space frames formed of tubular members extending from spheres are connected to each of the chords. The spheres are aligned along a line equidistant from the chords.
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Cited Art Landscape
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