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Class Information
Number: 175/15
Name: Boring or penetrating the earth > Boring by directly applying heat to fluidize or comminute > Rotating the heating tool
Description: Subject matter in which the heat applying or directing device is continuously rotated about an axis.










Patents under this class:

Patent Number Title Of Patent Date Issued
8701794 High power laser perforating tools and systems Apr. 22, 2014
8678087 Wellbore laser operations Mar. 25, 2014
8636085 Methods and apparatus for removal and control of material in laser drilling of a borehole Jan. 28, 2014
8550182 Electromagnetic energy assisted drilling system and method Oct. 8, 2013
8540026 Wellbore laser operations Sep. 24, 2013
8534357 Wellbore laser operations Sep. 17, 2013
8528643 Wellbore laser operations Sep. 10, 2013
8511401 Method and apparatus for delivering high power laser energy over long distances Aug. 20, 2013
8464794 Wellbore laser operations Jun. 18, 2013
8256531 Vertizontal geothermal loop and installation method Sep. 4, 2012
8235140 Methods and apparatus for thermal drilling Aug. 7, 2012
7487834 Methods of using a laser to perforate composite structures of steel casing, cement and rocks Feb. 10, 2009
7179018 Apparatus and method for working asphalt pavement Feb. 20, 2007
6880646 Laser wellbore completion apparatus and method Apr. 19, 2005
5771984 Continuous drilling of vertical boreholes by thermal processes: including rock spallation and fusion Jun. 30, 1998
4776638 Method and apparatus for conversion of coal in situ Oct. 11, 1988
4394076 Indicia recording apparatus Jul. 19, 1983
4260194 Method and device for producing underground cavities using a driving shield Apr. 7, 1981
4190121 Thermal drilling device Feb. 26, 1980
4073351 Burners for flame jet drill Feb. 14, 1978
3991817 Geothermal energy recovery Nov. 16, 1976
3934659 Apparatus for drilling holes in earth surface Jan. 27, 1976











 
 
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