Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/39
Name: Boring or penetrating the earth > With bit wear signal generating
Description: Process or apparatus comprising a step or means for initiating a signal when a specified condition relating to wear of the bit occurs.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8640791 System and method for monitoring and controlling underground drilling Feb. 4, 2014
8534391 Cutting elements and earth-boring tools having grading features Sep. 17, 2013
8386196 Method for determining the wear state Feb. 26, 2013
8185366 Methods for modeling, displaying, designing, and optimizing fixed cutter bits May. 22, 2012
8006781 Method of monitoring wear of rock bit cutters Aug. 30, 2011
7844405 Static and ultrasonic methods for measuring compressibility and density of small particles Nov. 30, 2010
7770664 Wear indicators for expandable earth boring apparatus Aug. 10, 2010
7726415 Fixed cutter drill bit Jun. 1, 2010
7707009 Drill bit performance analysis tool Apr. 27, 2010
7693695 Methods for modeling, displaying, designing, and optimizing fixed cutter bits Apr. 6, 2010
7624810 Ball dropping assembly and technique for use in a well Dec. 1, 2009
7600581 Downhole abrading tools having fusible material and uses therefor Oct. 13, 2009
7575070 Downhole abrading tools having excessive wear indicator Aug. 18, 2009
7565928 Downhole abrading tool having a taggant injection assembly for indicating excessive wear Jul. 28, 2009
7484571 Downhole abrading tools having excessive wear indicator Feb. 3, 2009
7424910 Downhole abrading tools having a hydrostatic chamber and uses therefor Sep. 16, 2008
7404457 Downhole abrading tools having fusible material and methods of detecting tool wear Jul. 29, 2008
7404456 Apparatus and method of identifying rock properties while drilling Jul. 29, 2008
7363988 System and method for processing and transmitting information from measurements made while drilling Apr. 29, 2008
7357197 Method and apparatus for monitoring the condition of a downhole drill bit, and communicating the condition to the surface Apr. 15, 2008
7356450 Methods for designing roller cone bits by tensile and compressive stresses Apr. 8, 2008
7318488 Method for classifying data measured during drilling operations Jan. 15, 2008
7316278 Method for determining drilling malfunction by correlation of drilling operating parameters and drilling response parameters Jan. 8, 2008
7261167 Method and system for predicting performance of a drilling system for a given formation Aug. 28, 2007
7258175 Method and apparatus and program storage device adapted for automatic drill bit selection based on earth properties and wellbore geometry Aug. 21, 2007
7140452 Method and apparatus for determining drill string movement mode Nov. 28, 2006
7114578 Method and apparatus for determining drill string movement mode Oct. 3, 2006
7100708 Autodriller bit protection system and method Sep. 5, 2006
7032689 Method and system for predicting performance of a drilling system of a given formation Apr. 25, 2006
6986395 Force-balanced roller-cone bits, systems, drilling methods, and design methods Jan. 17, 2006
6968909 Realtime control of a drilling system using the output from combination of an earth model and a drilling process model Nov. 29, 2005
6856949 Wear compensated roller cone drill bits Feb. 15, 2005
6817425 Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator Nov. 16, 2004
6814162 One cone bit with interchangeable cutting structures, a box-end connection, and integral sensory devices Nov. 9, 2004
6725947 Roller bits with bearing failure indication, and related methods, systems, and methods of manufacturing Apr. 27, 2004
6722450 Adaptive filter prediction method and system for detecting drill bit failure and signaling surface operator Apr. 20, 2004
6648082 Differential sensor measurement method and apparatus to detect a drill bit failure and signal surface operator Nov. 18, 2003
6634441 System and method for detecting roller bit bearing wear through cessation of roller element rotation Oct. 21, 2003
6631772 Roller bit rearing wear detection system and method Oct. 14, 2003
6619411 Design of wear compensated roller cone drill bits Sep. 16, 2003
6510906 Impregnated bit with PDC cutters in cone area Jan. 28, 2003
6484824 Failure indicator for rolling cutter drill bit Nov. 26, 2002
6408953 Method and system for predicting performance of a drilling system for a given formation Jun. 25, 2002
6386297 Method and apparatus for determining potential abrasivity in a wellbore May. 14, 2002
6374926 Method of assaying downhole occurrences and conditions Apr. 23, 2002
6205851 Method for determining drill collar whirl in a bottom hole assembly and method for determining borehole size Mar. 27, 2001
6167833 Wear indicator for rotary drilling tools Jan. 2, 2001
6131673 Method of assaying downhole occurrences and conditions Oct. 17, 2000
6109368 Method and system for predicting performance of a drilling system for a given formation Aug. 29, 2000
6068394 Method and apparatus for providing dynamic data during drilling May. 30, 2000

1 2










 
 
  Recently Added Patents
Toilet bowl
Recording apparatus, recording method, reproducing apparatus, reproducing method, program, and recording/producing apparatus
Targeted gene deletions for polysaccharide slime formers
Method and system for providing magnetic junctions having improved characteristics
Methods for measuring media performance associated with adjacent track interference
Multi display device and method of controlling the same
System and method for providing radio communication in a land mobile radio system
  Randomly Featured Patents
Method of notifying a wireless subscriber as to call payment responsibilities
Illumination measuring device for panoramic photography
Reproducing apparatus
Viewer
Class store schema
Compression techniques
Preparation of reaction mass for the production of methylchlorosilane
System for automatically loading immunoassay analyzer
Neck support
Endoscopic treatment instrument and retaining device