이 특허에 인용된 특허 (90) 인용/피인용 타임라인 분석

1. Fang Zhigang ; Huang Sujian ; Cawthorne Chris E. ; James Brian A. ; Kyker G. Steve ; Denton Robert ; Didericksen Roger, Composite earth boring bit seal.

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2. Fang Zhigang ; Huang Sujian ; Cawthorne Chris E. ; James Brian A. ; Kyker G. Steven ; Denton Robert, Composite rock bit seal.

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3. Upton Robert G. (Montgomery TX) Hooper Michael F. (Spring TX) Portwood Gary (Katy TX) Pyka Jerry (Houston TX) Johnston Randy (Conroe TX) Chambers Robert (Conroe TX), Composite seal for rotary cone rock bits.

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4. Upton Robert G. ; Hooper Michael E. ; Pyka Jerry ; Chambers Robert ; Portwood Gary ; Johnston Randy, Composite seal for rotary cone rock bits.

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5. Deane John D. (Houston TX) Kotch Robert J. (Humble TX), Compound dynamic seal for rolling cutter drill bit.

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6. Scott Danny Eugene, Diamond enhanced bearing for earth-boring bit.

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7. Daly Jeffery E. ; Pearce David E. ; Wick Thomas A., Different stiffness energizers for MF seals.

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8. Dysart Theodore R. (Dallas TX), Double seal with lubricant gap between seals for sealed rotary drill bits.

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9. Evans Robert F. (Dallas TX), Drill bit bearing seal.

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10. Michael A. Siracki ; Steven W. Peterson ; Chris E. Cawthorne ; Quan V. Nguyen, Drill bit having canted seal.

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11. Dolezal George Edward (Laurel MS), Drill bit with seal ring compensator.

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12. Dysart Theodore R. (Dallas TX), Drilling bit with improved trailing edge vent.

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13. Peterson, Steven W., Dual dynamic rotary seal.

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14. Cawthorne Chris E. ; Huang Sujian ; Fang Zhigang ; Siracki Michael A., Dual functioning seal for rock bits.

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15. Cawthorne Chris E. ; Huang Sujian ; Fang Zhigang ; Siracki Michael A., Dual functioning seal for rock bits.

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16. Cawthorne Chris E. ; Huang Sujian ; Fang Zhigang ; Siracki Michael A., Dual functioning seal for rock bits.

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17. Kelly ; Jr. Joseph L. (Houston TX) Welsh Michael F. (Houston TX), Dual metal face seal with single recessed energizer.

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18. Kar Nareshchandra J. (Westminster CA) Nimmagadda Rao R. (Fountain Valley CA), Dual squeeze seal gland.

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19. Portwood Gary Ray ; Cawthorne Chris Edward ; Slaughter ; Jr. Robert H. ; Didericksen Roger ; Cariveau Peter ; Denton Robert, Dual-seal drill bit pressure communication system.

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20. Slaughter ; Jr. Robert H. ; Didericksen Roger, Dual-seal drill bit with fluid cleaning capability.

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21. Neilson William J. (Murrieta CA), Dynamic O-ring seal.

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22. Deane John D. (Houston TX) Kotch Robert J. (Humble TX), Dynamic seal for rolling cutter drill bit.

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23. Burr Bruce H. (Houston TX), Earth boring bit with improved rigid face seal assembly.

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24. Welsh Michael F. (Houston TX), Earth boring bit with improved two piece bearing and seal assembly.

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25. Burr Bruce H. (Houston TX), Earth boring bit with pressure compensating rigid face seal.

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26. Burr Bruce H. (Houston TX), Earth boring bit with shear compression seal.

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27. Burr Bruce H. (Houston TX), Earth boring bit with two piece bearing and rigid face seal assembly.

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28. Zahradnik Anton F. ; Sullivan Eric C. ; Lin Chih ; Koltermann Terry J. ; Schmidt Scott R., Earth-boring bit with improved bearing seal.

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29. Zahradnik Anton F. ; Sullivan Eric C. ; Lin Chih ; Koltermann Terry J. ; Schmidt Scott R., Earth-boring bit with improved bearing seal.

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30. Kirk Philip B. (Houston TX) Dolezal George E. (Friendswood TX) Campbell Ronald R. (Upland CA), Earth-boring bit with improved bearing seal assembly.

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31. Pearce David E., Face seal having strain induced face geometry.

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32. Dysart Theodore R. (Arlington TX), Flat seal for a roller cone rock bit.

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33. Dysart Theodore R. (Dallas TX), Floating seal for drill bits.

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34. Oelke Erwin S. (Cypress CA), High-speed seal.

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35. Chia Weng-Kwen R. (Irvine CA) Anderson George F. (Buena Park CA), Mechanical face seal for rock bits.

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36. Fone Christopher J. (Reading GBX) Gilbert James (Amersham GBX) Martin Paul (Slough GBX), Mechanical face seals.

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37. Dolezal George E. (Friendswood TX) Clinkscales Douglas J. (Spring TX) Zahradnik Anton F. (Sugarland TX) Boylan Turlach P. (Houston TX), Mechanical lock to prevent seal ring rotation.

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38. Portwood Gary R., Multi-piece rotary cone drill bit seal.

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39. Denton Robert (Friendswood TX), O-ring seal for rock bit bearings.

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40. Denton Robert (Friendswood TX) Keshavan Madapusi K. (The Woodlands TX) Peterson Steven W. (The Woodlands TX), O-ring seal for rock bit bearings.

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41. Quantz Wayne C. (Kingwood TX) Hooper Michael E. (Spring TX) Keshavan Madapusi K. (The Woodlands TX) Hommel Mark J. (Houston TX), O-ring seal for rock bit bearings.

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42. Zhigang Fang ; Robert Denton ; Steven W. Peterson, O-ring seal with lubricant additives for rock bit bearings.

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43. Miglierini, Raul A., Optimized earth boring seal means.

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44. Newcomb Alan L. (Rancho Palos Verdes CA), Pressure venting O-ring bearing seal for rock bits.

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45. Oelke Erwin S. (Cypress CA), Radial belleville seal with encapsulated resilient core member.

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46. Estes, Roy D.; Wright, Beaumont B., Radial rock bit seal.

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47. Brolund Stig-.ANG.ke, Resilient, non-rotating seal for rock drill.

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48. Burr Bruce Hawley, Rock bit face seal having anti-rotation pins.

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49. Bruce H. Burr, Rock bit face seal having lubrication gap.

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50. Fang, Zhigang; Cawthorne, Chris; Mourik, Nephi M.; Huang, Sujian, Rock bit seal with multiple dynamic seal surface elements.

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51. Hooper Michael E. (Spring TX) Liang Dah-Ben (The Woodlands TX) Keshavan Madapusi K. (The Woodlands TX), Rock bit with mechanical seal.

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52. Kelly ; Jr. Joseph H. (Houston TX) Welsh Michael F. (Houston TX), Rock bit with rigid face seals and recessed energizers.

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53. Karlsson Harry L. (Sandviken SEX), Roller bit.

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54. van Nederveen Hans B. (Zeist NLX), Roller bit.

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55. Panigrahi Amiya K. ; Blackman Mark P. ; Lefort Guy James, Roller cone bit with improved seal gland design.

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56. Panigrahi, Amiya K.; Blackman, Mark P.; Lefort, Guy James, Roller cone bit with improved seal gland design.

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57. Daly Jeffery E. (Cypress TX) Kotch Robert J. (Humble TX), Roller cutter drill bit having a texturized seal member.

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58. Klima ; Frank J., Rolling cutter drill bit with annular seal rings.

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59. Lafuze David S. (Arlington TX), Rotary bearing seal for drill bits.

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60. Garner Lloyd L. (Ft. Worth TX) Westfall Samuel R. (Hurst TX) Rife Dwight A. (Ft. Worth TX), Rotary drill bit multiple seal assembly.

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61. Klima, Frank J., Rotary drill bit seal.

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62. Olschewski Armin (Schweinfurt DEX) Brandenstein Manfred (Eusenheim DEX) Walter Lothar (Schweinfurt DEX), Rotary drill bit with conical rotary cutters.

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63. Blackman Mark P. (Lewisville TX) Bird Jay S. (Waxahachie TX) Beaton Michael S. (Cedar Hill TX), Rotary drill bit with improved cutter and seal protection.

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64. Nigel M. Page GB; Philip D. Embury GB, Rotary drill bit with lip seal in roller cone bit.

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65. Nakamura Osamu (Tokyo JPX), Rotary shaft seal for drill bit cutters.

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66. Colebrook Mark A. (Cheltenham GB2), Rotatable pressure seal.

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67. Young, David E., Rotating shaft seal and bearing lubricating apparatus.

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68. Ippolito Rodolfo M. (Euless TX), Seal and bearing apparatus for bits.

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69. Tatum David M. (9251 Burdine ; No. 386 Houston TX 77096), Seal and seal shield assembly for rotary drill bits.

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70. Murdoch Henry W. (Humble TX) Schumacher Percy W. (Houston TX), Seal assembly for drill bits.

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71. Schumacher Percy W. (7726 Braesdale Houston TX 77071) Walter James C. (12819 Butterfly La. Houston TX 77024), Seal assembly for roller cutter drill bit having a pressure balanced lubrication system.

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72. Schumacher Percy W. (Houston TX) Walter James C. (Houston TX), Seal assembly for roller cutter drill bit having a pressure balanced lubrication system.

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73. Kotch Robert J. (Humble TX), Seal assembly for rotary drill bits.

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74. Cooper Thomas W. (Mansfield TX) Taylor Ernest E. (Irving TX), Seal for a rolling cone cutter earth boring bit.

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75. Titus Charles H. (323 Echo Valley La. Newtown Square PA 19073), Seal for well drilling assembly.

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76. Van Nguyen Quan (Houston TX), Seal protection for rock bits.

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77. Olschewski Armin (Schweinfurt DEX) Kunkel Heinrich (Schweinfurt DEX) Brandenstein Manfred (Aschfeld DEX) Walter Lothar (Schweinfurt DEX), Seal ring for drill bit assemblies.

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78. Williams Mark E. (2839 Red Oak Dr. Grand Prairie TX 75052), Sealed and lubricated rotary cone drill bit having improved seal protection.

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79. Cariveau Peter ; Slaughter ; Jr. Robert H. ; Didericksen Roger ; Cawthorne Chris Edward ; Portwood Gary Ray, Sealed bearing drill bit with dual-seal configuration.

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80. Slaughter ; Jr. Robert H. ; Cariveau Peter ; Didericksen Roger, Sealed bearing drill bit with dual-seal configuration and fluid-cleaning capability.

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81. Tatum David M. (9251 Burdine ; No. 386 Houston TX 77096), Sealing assembly for relatively movable members.

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82. Oldham Joel S. (San Juan Capistrano CA) Landerville Timothy L. (Lomita CA), Sealing ring for drilling tool cutters.

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83. Langford ; Jr. James W. (Red Oak TX), Sealing system for a rolling cone cutter earth boring bit.

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84. Penny Samuel Lee (Lancaster TX), Sealing system for a rotary rock bit.

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85. Gonzalez Eduardo B. (Ave. Universidad Num. 482 Mexico 13 ; D.F. MXX), Self compensating seal apparatus.

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86. Oelke Erwin S. (Cypress CA), Self-lapping high speed seal with wear-in lip.

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87. Burr Bruce Hawley ; Daly Jeffery E., Single energizer face seal for rocks bits with floating journal bearings.

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88. Crow Morgan L. (Dallas TX), Symmetrical seal for a rolling cone cutter earth boring bit.

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89. Olsson Burton K. (Park Ridge IL), Unitized seal for severe service applications.

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90. Kelly ; Jr. Joseph L. (Houston TX), Volume and pressure balanced rigid face seal for rock bits.

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이 특허를 인용한 특허 (15) 인용/피인용 타임라인 분석

1. Allen, Kevin M., Asymmetrical energized seal arrangement.

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2. Pelletier, Jean-Michel, Cable restrain device with dual-material double wedge chuck.

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3. Curry, David A.; Koltermann, Terry J.; Lin, Chih C.; Hall, Stuart, Composite metallic elastomeric sealing components for roller cone drill bits.

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4. Curry, David A.; Koltermann, Terry J.; Lin, Chih C.; Hall, Stuart, Composite metallic elastomeric sealing components for roller cone drill bits.

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5. Ade-Fosudo, Adebowale; Ramirez, Robert M.; Munshi, Ammar, Electronically set and retrievable isolation devices for wellbores and methods thereof.

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6. O'Connor, Keven; Adam, Mark K.; Williams, Jeffrey C., Expandable packer system.

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7. Bailey, William M.; Hayter, Steven R., Expandable seal with conforming ribs.

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8. Bishop, David S.; Ruffo, Antonio C.; Lehr, Douglas J., Packing element backup system.

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9. Rainey, Allan W.; Langford, James W., Percussion assisted rotary earth bit and method of operating the same.

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10. Lebeck, Alan Otto, Rock bit having a flexible metal faced seal.

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11. Lebeck, Alan Otto, Rock bit having a pressure balanced metal faced seal.

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12. Lebeck, Alan Otto, Rock bit having a radially self-aligning metal faced seal.

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13. Peterson, Gregory W., Seal assembly for a rotary earth bit.

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14. O'Malley, Edward J., Sealing devices for sealing inner wall surfaces of a wellbore and methods of installing same in a wellbore.

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15. Castillo, Robert O.; Farar, Amy L.; Wood, Edward T.; Williams, Jeffrey C., Sealing devices having a non-elastomeric fibrous sealing material and methods of using same.

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