Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/371
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > With bearing or seal details
Description: Apparatus provided with a specific bearing or seal structure.










Sub-classes under this class:

Class Number Class Name Patents
175/372 Antifriction type 103


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8689907 Patterned texturing of the seal surface for a roller cone rock bit Apr. 8, 2014
8672060 High shear roller cone drill bits Mar. 18, 2014
8631864 Durability of downhole tools Jan. 21, 2014
8567491 Device and method of lining a wellbore Oct. 29, 2013
8534389 Method and apparatus for reducing lubricant pressure pulsation within a rotary cone rock bit Sep. 17, 2013
8459379 Bearing contact pressure reduction in well tools Jun. 11, 2013
8448723 Seal assembly for drill bit May. 28, 2013
8443919 Semi-sealed blast hole bit and method for drilling May. 21, 2013
8439134 Method and apparatus for a true geometry, durable rotating drill bit May. 14, 2013
8403079 Rock bit having a seal gland with a conical sealing surface Mar. 26, 2013
8393418 Rock bit having a seal gland with a conical sealing surface Mar. 12, 2013
8383559 Releasable corrosion inhibitors Feb. 26, 2013
8347683 Texturing of the seal surface for a roller cone rock bit Jan. 8, 2013
8337085 Air circulation ports in rotary rock bit journal bearing Dec. 25, 2012
8201646 Method and apparatus for a true geometry, durable rotating drill bit Jun. 19, 2012
8196682 Earth boring bit with wear resistant bearing and seal Jun. 12, 2012
8020638 Seal with dynamic sealing surface at the outside diameter Sep. 20, 2011
7992657 Earth bit having a wear ring Aug. 9, 2011
7896109 Spacer ring for elastomeric seal Mar. 1, 2011
7861805 Conformal bearing for rock drill bit Jan. 4, 2011
7798254 Earth bit with hub and thrust units Sep. 21, 2010
7798248 Roller bearing seal companion ring having textured surface for holding lubricant and small particles Sep. 21, 2010
7735583 Roller cone bit bearing with elastomeric seal having self break-in property and method Jun. 15, 2010
7721827 Rock bit having a seal gland with a conical sealing surface May. 25, 2010
7708090 Excluder ring for earth-boring bit May. 4, 2010
7694754 Stabilized seal for rock bits Apr. 13, 2010
7690138 Rolling assembly mounted on a trencher Apr. 6, 2010
7676968 Roller assembly Mar. 16, 2010
7658244 Device for advancing drillings in the ground Feb. 9, 2010
7628231 Protector for rock bit seals Dec. 8, 2009
7621346 Hydrostatic bearing Nov. 24, 2009
7552783 Graded hardfacing for drill bits Jun. 30, 2009
7543660 Roller cone drill bit with debris diverter plugs Jun. 9, 2009
7530409 Rotary roller reamer May. 12, 2009
7484572 Roller cone drill bit with debris flow paths through associated support arms Feb. 3, 2009
7469618 Maintaining carburized case during neutral to the core heat treatment processes Dec. 30, 2008
7461708 Elastomeric seal assembly having auxiliary annular seal components Dec. 9, 2008
7413037 Metal face seal for an earth-boring bit Aug. 19, 2008
7392862 Seal insert ring for roller cone bits Jul. 1, 2008
7387177 Bearing insert sleeve for roller cone bit Jun. 17, 2008
7387178 Self relieving seal Jun. 17, 2008
RE40197 Drill bit having an improved seal and lubrication method using same Apr. 1, 2008
7320375 Split cone bit Jan. 22, 2008
7311159 PCD face seal for earth-boring bit Dec. 25, 2007
7306061 Mud diverter for earth-boring bit Dec. 11, 2007
7278500 Roller cutter Oct. 9, 2007
7267186 Magnetic face seal for rock drill bit bearings Sep. 11, 2007
7201241 Self relieving seal Apr. 10, 2007
7188691 Metal seal with impact-absorbing ring Mar. 13, 2007
7128173 PCD face seal for earth-boring bit Oct. 31, 2006

1 2 3 4 5 6










 
 
  Recently Added Patents
Silicon-on-insulator (SOI) structure configured for reduced harmonics and method of forming the structure
Inter vehicle communication system
Medical injector
Alterable account number
Photoelectric conversion device
Fire detector
System and method for performing image correction
  Randomly Featured Patents
Process for the preparation of alkylene carbonate and/or alkylene glycol
Procedure and apparatus for generating automatic replay of recordings
Process for separation of the dipotassium salt of naphthalene dicarboxylic acid using activated carbon beds
Positive electrode material for a lithium ion accumulator
Hydantoin compounds and methods related thereto
Protection switching of virtual connections at the data link layer
Guidance control system for a traction vehicle
Bisguanidine salts and a method for releasing a base using the same salts
Gas modulation to control edge exclusion in a bevel edge etching plasma chamber
System and method for social-networking based presence