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Class Information
Number: 175/256
Name: Boring or penetrating the earth > With releasable means normally holding jointed shaft sections in angular relation
Description: Apparatus comprising a tool shaft having sections which are joined together by means permitting relative movement transverse to the longitudinal axis thereof, as by pivoting, and a means which normally holds the two sections of shafting in their angular or bent condition and which may be rendered inoperable to permit the two shaft sections to assume in aligned position.










Patents under this class:

Patent Number Title Of Patent Date Issued
7913768 Release device Mar. 29, 2011
7882904 Adjustable bent housing apparatus and method Feb. 8, 2011
7717472 Method of locking tubular components in end to end relation May. 18, 2010
7347283 Using a rotating inner member to drive a tool in a hollow outer member Mar. 25, 2008
7198101 Downhole release joint Apr. 3, 2007
7025152 Using a rotating inner member to drive a tool in a hollow outer member Apr. 11, 2006
6799646 Adjustable deflecting sub Oct. 5, 2004
6739413 Using a rotating inner member to drive a tool in a hollow outer member May. 25, 2004
6640911 Device for connecting a tool to a drive Nov. 4, 2003
6543554 Adjustable housing for a mud motor Apr. 8, 2003
6516901 Adjustable orienting sub Feb. 11, 2003
6494273 Elevator for supporting an elongate member such as a drill pipe Dec. 17, 2002
6460633 Side tracking bit Oct. 8, 2002
6364034 Directional drilling apparatus Apr. 2, 2002
5875859 Device for controlling the drilling direction of drill bit Mar. 2, 1999
5669457 Drill string orienting tool Sep. 23, 1997
5368111 Directional drilling sub with improved multi-slot locking arrangement Nov. 29, 1994
5314032 Movable joint bent sub May. 24, 1994
5273123 Fitting for controlled trajectory drilling, comprising a variable angle elbow element and use of this fitting Dec. 28, 1993
5168943 Adjustable bent sub Dec. 8, 1992
5101914 Orientatable adjustable bent housing Apr. 7, 1992
5050692 Method for directional drilling of subterranean wells Sep. 24, 1991
5048621 Adjustable bent housing for controlled directional drilling Sep. 17, 1991
5029654 Bendable drilling sub Jul. 9, 1991
4895214 Directional drilling tool Jan. 23, 1990
4836301 Method and apparatus for directional drilling Jun. 6, 1989
4836303 Device for the remote adjustment of the relative orientation of two sections of a column Jun. 6, 1989
4834196 Well drilling tool May. 30, 1989
4817740 Apparatus for directional drilling of subterranean wells Apr. 4, 1989
4811798 Drilling motor deviation tool Mar. 14, 1989
4789032 Orienting and circulating sub Dec. 6, 1988
4732223 Controllable downhole directional drilling tool Mar. 22, 1988
4694914 Drilling string for drilling a bent bore, a method of using said string, and a bending device used in said string Sep. 22, 1987
4641717 Connector housing Feb. 10, 1987
4597454 Controllable downhole directional drilling tool and method Jul. 1, 1986
4303135 Directional drilling sub Dec. 1, 1981
4299295 Process for degasification of subterranean mineral deposits Nov. 10, 1981
4077657 Adjustable bent sub Mar. 7, 1978











 
 
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