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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
7117961 Dynamic seal with soft interface Oct. 10, 2006
7086487 Anti-mud packing seal gland Aug. 8, 2006
7066287 Mud debris diverter for earth-boring bit Jun. 27, 2006
7044242 Roller cone bits with reduced packing May. 16, 2006
7036613 Lip seal for roller cone drill bit May. 2, 2006
7013998 Drill bit having an improved seal and lubrication method using same Mar. 21, 2006
7000712 Bearing seal Feb. 21, 2006
6976548 Self relieving seal Dec. 20, 2005
6935443 Mini disk bit Aug. 30, 2005
6837317 Bearing seal Jan. 4, 2005
6820704 Rock bit seal with extrusion prevention member Nov. 23, 2004
6789634 Self-lubricating elastomeric seal with polarized graphite Sep. 14, 2004
6769500 Optimized earth boring seal means Aug. 3, 2004
6752223 Roller cone bit with improved seal gland design Jun. 22, 2004
6725947 Roller bits with bearing failure indication, and related methods, systems, and methods of manufacturing Apr. 27, 2004
6708786 Mounting attachment and bearing system for an industrial earth-boring cutter Mar. 23, 2004
6695079 Dual-seal drill bit pressure communication system Feb. 24, 2004
6679342 Dual-seal drill bit pressure communication system Jan. 20, 2004
6637528 Bit apparatus Oct. 28, 2003
6598690 Dual dynamic rotary seal Jul. 29, 2003
6578647 Sealing structure for a rock drill bit Jun. 17, 2003
6571889 Rotary cone bit with functionally-engineered composite inserts Jun. 3, 2003
6536542 Rock bit seal with multiple dynamic seal surface elements Mar. 25, 2003
6533051 Roller cone drill bit shale diverter Mar. 18, 2003
6513607 Metal-face-seal rock bit Feb. 4, 2003
6474424 Rotary cone drill bit with improved bearing system Nov. 5, 2002
6431293 Dual-seal drill bit pressure communication system Aug. 13, 2002
6427790 Rock bit face seal having lubrication gap Aug. 6, 2002
6408957 Sealed bearing roller cone bit having anti-plugging device Jun. 25, 2002
6401843 Drilling head with a cone rock bit Jun. 11, 2002
6390209 Roller cone drill bit with improved pressure compensation May. 21, 2002
6357540 Rotary drill bit with lip seal in roller cone bit Mar. 19, 2002
6336512 Drill bit having canted seal Jan. 8, 2002
6330923 Sealing bearings in drill bits Dec. 18, 2001
6305483 Multi-piece rotary cone drill bit seal Oct. 23, 2001
6279671 Roller cone bit with improved seal gland design Aug. 28, 2001
6264367 Dual-seal drill bit with fluid cleaning capability Jul. 24, 2001
6260635 Rotary cone drill bit with enhanced journal bushing Jul. 17, 2001
6250407 Rotary drill bit having filling opening for the installation of cylindrical bearings Jun. 26, 2001
6247545 Single energizer face seal for rocks bits with floating journal bearings Jun. 19, 2001
6213228 Roller cone drill bit with improved pressure compensation Apr. 10, 2001
6209668 Earth-boring bit with improved cutting structure Apr. 3, 2001
6196339 Dual-seal drill bit pressure communication system Mar. 6, 2001
6176330 Rock bit face seal having anti-rotation pins Jan. 23, 2001
6170582 Rock bit cone retention system Jan. 9, 2001
6142249 Earth-boring bit with improved bearing seal Nov. 7, 2000
6131676 Small disc cutter, and drill bits, cutterheads, and tunnel boring machines employing such rolling disc cutters Oct. 17, 2000
6116360 Methods of manufacturing rotary drill bits Sep. 12, 2000
6109376 Face seal having strain induced face geometry Aug. 29, 2000
6092611 Encapsulated elastomeric relief valve Jul. 25, 2000

1 2 3 4 5 6










 
 
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