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Class Information
Number: 175/231
Name: Boring or penetrating the earth > With means movable relative to tool below ground to control eccentric fluid emission
Description: Apparatus including a means which is movable relative to a tool while the tool is below ground to change the direction of flow nonsymmetrically relative to the bore axis of fluid discharging from the tool, usually to alter the direction of boring.

Patents under this class:

Patent Number Title Of Patent Date Issued
8640768 Sintered polycrystalline diamond tubular members Feb. 4, 2014
8408337 Downhole blowout preventor Apr. 2, 2013
8353355 Drill string/annulus sealing with swellable materials Jan. 15, 2013
8104505 Two-way actuator and method Jan. 31, 2012
7717197 Apparatus for keeping a down hole drilling tool vertically aligned May. 18, 2010
7665549 Entrainment fluid channeling device for a down-hole drill string Feb. 23, 2010
7624821 Constricting flow diverter Dec. 1, 2009
7441607 Circulation tool Oct. 28, 2008
6899188 Down hole drilling assembly with concentric casing actuated jet pump May. 31, 2005
6769498 Method and apparatus for inducing under balanced drilling conditions using an injection tool attached to a concentric string of casing Aug. 3, 2004
6173795 Multi-cycle circulating sub Jan. 16, 2001
5937954 Method for directional drilling Aug. 17, 1999
5682957 Water separator for a down hole drill Nov. 4, 1997
5363927 Apparatus and method for hydraulic drilling Nov. 15, 1994
5343968 Downhole material injector for lost circulation control Sep. 6, 1994
RE33793 Apparatus and method for forming an enlarged underground arcuate bore and installing a conduit therein Jan. 14, 1992
4960176 Device for cutting, drilling or similar working of rock, ore, concrete or the like Oct. 2, 1990
4685520 Open hole pipe recovery circulation valve Aug. 11, 1987
4679637 Apparatus and method for forming an enlarged underground arcuate bore and installing a conduit therein Jul. 14, 1987
4307786 Borehole angle control by gage corner removal effects from hydraulic fluid jet Dec. 29, 1981
4114705 Rock drilling tool having pulsed jets Sep. 19, 1978
4077481 Subterranean mining apparatus Mar. 7, 1978
4058163 Selectively actuated vibrating apparatus connected with well bore member Nov. 15, 1977

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