Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4519614 | Generally cylindrical rotary drill face seal having improved resistance to radial distortion | — | 1985-05-28 |
| 4466621 | Rotary drill bit multiple seal assembly | Samuel R. Westfall, Dwight A. Rife | 1984-08-21 |
| 4439050 | Rotary bit bearing system | — | 1984-03-27 |
| 4436164 | Lubrication failure detection system | — | 1984-03-13 |
| 4359112 | Hybrid diamond insert platform locator and retention method | Joe W. Vincent, William J. Baker | 1982-11-16 |
| 4359335 | Method of fabrication of rock bit inserts of tungsten carbide (WC) and cobalt (Co) with cutting surface wear pad of relative hardness and body portion of relative toughness sintered as an integral composite | — | 1982-11-16 |
| 4343371 | Hybrid rock bit | William J. Baker, Charles R. Harris | 1982-08-10 |
| 4260203 | Bearing structure for a rotary rock bit | — | 1981-04-07 |
| 4231438 | Straight hole insert drill bit | Charles R. Harris | 1980-11-04 |
| 4210270 | Electronic monitoring of rock bit parameters | — | 1980-07-01 |
| 4187921 | Rock bit combination to enhance cuttings removal | — | 1980-02-12 |