Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 175/83
Name: Boring or penetrating the earth > Tool shaft advanced relative to guide insertable in inaccessible hole to change direction of advance > Guide carried by shaft to operative position > With clutch means acting between shaft and guide
Description: Apparatus in which the means changing the direction of advance and the tool shaft are provided with means for preventing their relative rotation which is manipulable, usually by relative longitudinal movement, to permit relative rotation therebetween.

Patents under this class:

Patent Number Title Of Patent Date Issued
7669672 Apparatus, system and method for installing boreholes from a main wellbore Mar. 2, 2010
7216726 Downhole fluid-tight flexible joint May. 15, 2007
6588542 Borehole tool actuating mechanism Jul. 8, 2003
6401842 Directional drilling apparatus with shifting cam Jun. 11, 2002
6315075 Borehole logging tool with anchoring mechanism Nov. 13, 2001
5012877 Apparatus for deflecting a drill string May. 7, 1991
4989679 Centering device that can be engaged or disengaged, specifically for a drilling assembly Feb. 5, 1991
4305462 Apparatus for positioning deflection wedges Dec. 15, 1981

  Recently Added Patents
DMAPN having a low DGN content and a process for preparing DMAPA having a low DGN content
Dynamically reconfigurable systolic array accelorators
Method for producing a sulfonated polyarylether block copolymer
Adhering composition and method of applying the same
Antenna for an automobile
Resource capacity monitoring and reporting
Authentication platform and related method of operation
  Randomly Featured Patents
Bone anchor
Excimer laser patterning of a novel resist using masked and maskless process steps
Absorbent structure comprising synergistic components for superabsorbent polymer
Wheelchair back for kyphotic patients
Method of and apparatus for cutting material to shape from a moving web by burning
Apparatus for splitting signal and video device using the same
Method, devices and system for multiple RFID tag read-out
Media preferences
Barrier dielectric stack for seam protection
Development system employing acoustic toner fluidization for donor roll