Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7475947 | Extendable cutter drum for a boring machine | — | 2009-01-13 |
| 6431654 | Mining machine having an extendable and retractable rotor arm and method of repairing an extendable and retractable rotor arm assembly | — | 2002-08-13 |
| 6371255 | Spring applied hydraulic release brake | — | 2002-04-16 |
| 6070944 | Phasing valve assembly for supplying water to a mining machine cutter drum | — | 2000-06-06 |
| 5921632 | Method and apparatus for extending the cutter drum of a boring machine | — | 1999-07-13 |
| 5507565 | Method and apparatus for suppressing dust and frictional ignition on a continuous mining machine | Ronald W. Keen | 1996-04-16 |
| 5295733 | Fiber optic remote control system for a continuous miner and method of use | — | 1994-03-22 |
| 5190352 | Mining machine with cascading conveyor system and method of conveying | Clarence H. Woodford, II | 1993-03-02 |
| 5188427 | Twin scrubber and air diffuser for a continuous miner and method of ventilation | Julius N. Hornyak | 1993-02-23 |
| 5143423 | Drum assembly for a continuous miner | Jon C. Blackstock, Clarence H. Woodford, II, Leonard M. Sanders | 1992-09-01 |
| 5104194 | Continuous miner with improved duct system and method of increasing duct cross section | Clarence H. Woodford, II, Leonard M. Sanders, John A. Baird, Jr. | 1992-04-14 |
| 5102199 | Continuous mining machine with a boom assembly providing different cutting heights and method of converting | — | 1992-04-07 |
| 5082331 | Continuous miner with duct assembly | Henry E. Wilson | 1992-01-21 |
| 4953914 | Mining machine with roof bolting apparatus | — | 1990-09-04 |
| 4936632 | Continuous miner with duct assembly | Henry E. Wilson | 1990-06-26 |
| 4840432 | Continuous miner with duct assembly | Henry E. Wilson | 1989-06-20 |
| 4753486 | Mining machine with roof bolting apparatus | — | 1988-06-28 |
| 4641888 | Material gathering device for a mining machine | Henry E. Wilson | 1987-02-10 |
| 4582363 | Drive assembly for mining machine cutter drum | Gerald L. Baum | 1986-04-15 |
| 4546849 | Machine operators compartment | Barry R. Kelley, Earl C. Michael | 1985-10-15 |
| 4380354 | Mining machine loading bin mounted on boom structure and method | — | 1983-04-19 |
| 4339153 | Apparatus for extending and retracting the cutter bars of a boring type mining machine | Earl C. Michael | 1982-07-13 |
| 4316635 | Extensible and retraciable rotor arm cutting assembly | Earl C. Michael | 1982-02-23 |
| 4299424 | Cutting tool assembly | Charles R. Herron | 1981-11-10 |
| 4281879 | Stabilizing assembly for a mining machine | Ronald W. Keen, Donald E. Keller | 1981-08-04 |