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Class Information
Number: 175/321
Name: Boring or penetrating the earth > With tool shaft detail > Axially telescoping shaft section
Description: Apparatus in which separate sections of tool shafting cooperate with one another so as to be slidably extensible or collapsible (e.g., one section slidable within a second section) and including below ground tool advancing devices such as fluid operated expansible chamber feed means.










Sub-classes under this class:

Class Number Class Name Patents
175/322 Telescoping motion related to relative axial rotation or oscillation 51


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8505653 Downhole apparatus Aug. 13, 2013
8439129 Anti-stall tool for downhole drilling assemblies May. 14, 2013
8381842 Apparatus for rotary mining Feb. 26, 2013
8327953 Drilling tool with feed control Dec. 11, 2012
8256516 System and method for providing a downhole mechanical energy absorber Sep. 4, 2012
8215400 System and method for opening a window in a casing string for multilateral wellbore construction Jul. 10, 2012
8205691 Downhole vibration dampener Jun. 26, 2012
8146680 Anti-stall tool for downhole drilling assemblies Apr. 3, 2012
8100200 Chuck assembly for a down-hole drill Jan. 24, 2012
7997356 Apparatus for rotary mining Aug. 16, 2011
7950475 Percussion drilling assembly having a floating feed tube May. 31, 2011
7946360 Downhole drilling of a lateral hole May. 24, 2011
7854275 Spring-operated anti-stall tool Dec. 21, 2010
7779935 Mechanically engaged and releasable connection system Aug. 24, 2010
7779932 Drill-string shock absorbers Aug. 24, 2010
7770670 Apparatus for rotary mining Aug. 10, 2010
7730957 Well tool with line and installation method Jun. 8, 2010
7677334 Anti-surge/reverse thruster Mar. 16, 2010
7578360 Dynamic damper for use in a drill string Aug. 25, 2009
7506704 Downhole swivel joint Mar. 24, 2009
7419015 Rock drilling machine and axial bearing Sep. 2, 2008
7413036 Sub drilling sub Aug. 19, 2008
7377339 System and method for damping vibration in a drill string May. 27, 2008
7377316 Side entry apparatus and method May. 27, 2008
7299885 Downhole drill string having a collapsible subassembly and method of loosening a stuck drillstring Nov. 27, 2007
7287603 Combined casing expansion/casing while drilling method and apparatus Oct. 30, 2007
7275605 Rotatable drill shoe Oct. 2, 2007
7270196 Drill bit assembly Sep. 18, 2007
7219752 System and method for damping vibration in a drill string May. 22, 2007
7188672 Well string assembly Mar. 13, 2007
7188690 Drilling device and method for producing undercut holes Mar. 13, 2007
7165609 Apparatus for handling tubular goods Jan. 23, 2007
7163069 Telescopable boring rod mechanism Jan. 16, 2007
7036612 Controllable magneto-rheological fluid-based dampers for drilling May. 2, 2006
7025130 Methods and apparatus to control downhole tools Apr. 11, 2006
7004266 Adjustable downhole tool Feb. 28, 2006
6994628 Locking swivel apparatus with replaceable internal gear members Feb. 7, 2006
6991035 Drilling jar for use in a downhole network Jan. 31, 2006
6951082 Drilling rig with torque carrier Oct. 4, 2005
6926102 Subsea controlled milling Aug. 9, 2005
6915865 Locking swivel apparatus with a supplemental internal locking mechanism Jul. 12, 2005
6905114 Shock absorbing and shock force generating apparatus with shear pin for an oil pump and method therefor Jun. 14, 2005
6892829 Two string drilling system May. 17, 2005
6736223 Thrust control apparatus May. 18, 2004
6708761 Apparatus for absorbing a shock and method for use of same Mar. 23, 2004
6708785 Fluid controlled adjustable down-hole tool Mar. 23, 2004
6702040 Telescopic drilling method Mar. 9, 2004
6543557 Drill hammer assembly Apr. 8, 2003
6527048 Hydraulically actuated downhole coupler system, especially for combination washover/fishing tool assemblies Mar. 4, 2003
6481495 Downhole tool with electrical conductor Nov. 19, 2002

1 2 3 4 5










 
 
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