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Class Information
Number: 175/108
Name: Boring or penetrating the earth > Common drive or advancing means for concurrently boring along laterally spaced axes
Description: Apparatus including a single means which directly contacts, or is connected through a gearing or otherwise, to at least two boring tools, and the means functions to drive or advance the boring tools along different axes.










Patents under this class:

Patent Number Title Of Patent Date Issued
8689902 Method and equipment for displaying drill holes and method for directing drill rod when holes are drilled into rock Apr. 8, 2014
8210278 Method for drilling rock Jul. 3, 2012
7748477 Boring system and method therefor Jul. 6, 2010
6892834 Piloted drill barrel and method of using same May. 17, 2005
6732816 Method of forming a trenchless flowline May. 11, 2004
6439322 Downhole hammer-type core barrel and method of using same Aug. 27, 2002
6422328 Dual cutting mill Jul. 23, 2002
6189630 Downhole hammer-type core barrel Feb. 20, 2001
6082471 Horizontal boring apparatus used to install a pipeline Jul. 4, 2000
5979573 Horizontal boring apparatus Nov. 9, 1999
5797465 Multi-shaft drilling unit Aug. 25, 1998
5575345 Multi shaft drilling unit Nov. 19, 1996
5358060 Successive hole boring machine and lost strike preventing device for successive hole boring machine Oct. 25, 1994
5111801 Apparatus for forming slit in rock and concrete surface May. 12, 1992
4444278 Rotatable drilling head Apr. 24, 1984
4402371 Rotatable drilling head Sep. 6, 1983
4134462 Geothermal energy recovery Jan. 16, 1979
4121668 Motor-driven cultivator with counter-rotating auger shafts Oct. 24, 1978
4013319 Tunneling machine with massive guide for impact tools Mar. 22, 1977
3991817 Geothermal energy recovery Nov. 16, 1976











 
 
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