Convertible vibratory or rotary core drill apparatus
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United States of America Patent
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Oct 22, 1991
Issued Date -
N/A
app pub date -
Nov 14, 1990
filing date -
Apr 14, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A convertible drill apparatus for applying force to a probe capable of operating in either a vibratory drilling mode wherein the apparatus is adapted to drive the probe into the material to be drilled or a rotary drilling mode wherein the apparatus drives the probe into the material to be drilled by rotation of the probe. The apparatus comprises a drill stand, vibratory drive for imparting a vibratory motion to the probe, rotary drive for imparting a rotary movement to the probe, a vibratory drive probe coupling for coupling the probe to the vibratory drive, a rotary drive probe coupling for coupling the probe to the rotary drive, a support for supporting and containing the coupling, a carriage assembly for mounting the support to the drill stand in sliding up and down fashion, and carriage drive for lifting or lowering the carriage assembly. The invention can be easily converted from vibratory drilling modes to rotary drilling modes and back by exchanging the vibratory drive with the rotary drive. By converting from vibratory drilling mode to rotary drilling mode, the drill apparatus can drive the probes through rock, soil, asphalt or other material which would hamper vibratory drilling alone.
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