Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886130 | Nutational technique for limiting well bore deviation | — | 1989-12-12 |
| 4722404 | Drill bit bearing seal | — | 1988-02-02 |
| 4687066 | Rock bit circulation nozzle | — | 1987-08-18 |
| 4666000 | Rock bit cutter retainer | — | 1987-05-19 |
| 4624329 | Rotating cutter drill set | Randy C. Davis | 1986-11-25 |
| 4552228 | Low pressure differential compensator | Charles W. Stafford | 1985-11-12 |
| 4494749 | Seal assemblies | — | 1985-01-22 |
| 4478295 | Tuned support for cutting elements in a drag bit | — | 1984-10-23 |
| 4452539 | Bearing seal for rotating cutter drill bit | Randy C. Davis | 1984-06-05 |
| 4386669 | Drill bit with yielding support and force applying structure for abrasion cutting elements | — | 1983-06-07 |
| 4386458 | Fatigue resistance for coupling and connection joint mechanisms | — | 1983-06-07 |
| 4346591 | Sensing impending sealed bearing and gage failure | — | 1982-08-31 |
| 4335791 | Pressure compensator and lubricating reservoir with improved response to substantial pressure changes and adverse environment | — | 1982-06-22 |
| 4307786 | Borehole angle control by gage corner removal effects from hydraulic fluid jet | — | 1981-12-29 |
| 4295254 | Transmission line cable applicator machine | John Adams, John H. Gavin | 1981-10-20 |
| 4294492 | Caliper seal assembly | — | 1981-10-13 |
| 4291773 | Strictive material deflectable collar for use in borehole angle control | — | 1981-09-29 |
| 4287957 | Cooling a drilling tool component with a separate flow stream of reduced-temperature gaseous drilling fluid | — | 1981-09-08 |
| 4262758 | Borehole angle control by gage corner removal from mechanical devices associated with drill bit and drill string | — | 1981-04-21 |
| 4245644 | Breast prosthesis or augmenting form including spring-mass system | — | 1981-01-20 |
| 4240586 | Method and apparatus for crushing and classifying particulate material | — | 1980-12-23 |
| 4240674 | Positive lubricating and indexing bearing assembly | — | 1980-12-23 |
| 4240695 | Optical fibers connector | — | 1980-12-23 |
| 4211292 | Borehole angle control by gage corner removal effects | — | 1980-07-08 |
| 4209684 | Fusion technique of assembling rotary drill bit and adjusting gage of cutting elements | — | 1980-06-24 |