Willis; Clyde A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Willis; Clyde A..The latest application filed is for "apparatus for gripping a down hole tubular for use in a drilling machine".
- Willis; Clyde A. - Wichita Falls TX
- Willis; Clyde A. - Portage MI
| Patent | Date |
|---|---|
| Apparatus for gripping a down hole tubular for use in a drilling machine App 20090121507 - Willis; Clyde A. | 2009-05-14 |
| Apparatus for gripping a down hole tubular for support and rotation Grant 5,297,833 - Willis , et al. March 29, 1 | 1994-03-29 |
| Automatic sequencing system for earth drilling machine Grant 5,294,228 - Willis , et al. March 15, 1 | 1994-03-15 |
| Feeding device for down hole tubulars Grant 5,259,723 - Willis , et al. November 9, 1 | 1993-11-09 |
| Apparatus for gripping a down hole tubular for rotation Grant 5,036,927 - Willis August 6, 1 | 1991-08-06 |
| Top head drive cooling system Grant 4,830,119 - Haney , et al. May 16, 1 | 1989-05-16 |
| Method of assembling a modular drilling machine Grant 4,821,816 - Willis April 18, 1 | 1989-04-18 |
| Top head drive assembly for earth drilling machine and components thereof Grant 4,821,814 - Willis , et al. April 18, 1 | 1989-04-18 |
| Top head drive assembly with axially movable quill Grant 4,815,546 - Haney , et al. March 28, 1 | 1989-03-28 |
| Modular drilling machine and components thereof Grant 4,759,414 - Willis July 26, 1 | 1988-07-26 |
| Automatic pipe elevator Grant 4,650,236 - Haney , et al. March 17, 1 | 1987-03-17 |
| Axial return hammer Grant 4,509,606 - Willis April 9, 1 | 1985-04-09 |
| Lifting apparatus for down-hole tubulars Grant 4,407,629 - Willis October 4, 1 | 1983-10-04 |
| Self-centering clamp for down-hole tubulars Grant 4,403,897 - Willis September 13, 1 | 1983-09-13 |
| Self centering tongs and transfer arm for drilling apparatus Grant 4,403,666 - Willis September 13, 1 | 1983-09-13 |
| Self-centering clamp for down-hole tubulars Grant 4,366,606 - Willis , et al. January 4, 1 | 1983-01-04 |
| Apparatus for supporting and rotating a down hole tubular Grant 4,314,611 - Willis February 9, 1 | 1982-02-09 |
| Inner tube assembly for dual conduit drill pipe Grant 4,280,535 - Willis July 28, 1 | 1981-07-28 |
| Nutating drill bit Grant 4,168,755 - Willis September 25, 1 | 1979-09-25 |
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