Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9163458 | Rock bit having a flexible metal faced seal | — | 2015-10-20 |
| 9163459 | Rock bit having a pressure balanced metal faced seal | — | 2015-10-20 |
| 9091130 | Rock bit having a radially self-aligning metal faced seal | — | 2015-07-28 |
| 8616233 | Rotary face seal with anti-crowning features | Christopher R. McLean, Michel P. LeBlanc, Michael Jamie McKerrow, Bowie G. Keefer, Xiang Lu Kong | 2013-12-31 |
| 6918594 | Face seal assembly with composite stator | Steven Sund, James V. Guiheen, Raymond J. Knorr | 2005-07-19 |
| 6213473 | Double gas seal with coplanar pad faces | — | 2001-04-10 |
| 6003875 | Gland assembly for use with mechanical seal | Peterjon Ellis | 1999-12-21 |
| 4973068 | Differential surface roughness dynamic seals and bearings | — | 1990-11-27 |
| 4887395 | Wavy-tilt-dam seal ring and apparatus for shaping seal rings | Lionel A. Young | 1989-12-19 |
| 4836561 | Wavy-tilt-dam seal ring | Lionel A. Young | 1989-06-06 |
| 4834400 | Differential surface roughness dynamic seals and bearings | — | 1989-05-30 |
| 4792146 | Radially compliant - zero net thermal radial taper mechanical face seal | Lionel A. Young | 1988-12-20 |