Dysart; Theodore R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Dysart; Theodore R..The latest application filed is for "flat seal for a roller cone rock bit".
- Dysart; Theodore R. - Arlington TX
- Dysart; Theodore R. - Dallas TX
| Patent | Date |
|---|---|
| Flat seal for a roller cone rock bit Grant 5,513,715 - Dysart May 7, 1 | 1996-05-07 |
| Roller cone rock bit having a sealing system with double elastomer seals Grant 5,441,120 - Dysart August 15, 1 | 1995-08-15 |
| Double seal with lubricant gap between seals for sealed rotary drill bits Grant 5,027,911 - Dysart July 2, 1 | 1991-07-02 |
| Sealed rotary blast hole drill bit utilizing air pressure for seal protection Grant 4,981,182 - Dysart January 1, 1 | 1991-01-01 |
| Drilling bit with improved trailing edge vent Grant 4,813,502 - Dysart March 21, 1 | 1989-03-21 |
| Cone mouth debris exclusion shield Grant 4,688,651 - Dysart August 25, 1 | 1987-08-25 |
| Floating seal for drill bits Grant 4,249,622 - Dysart February 10, 1 | 1981-02-10 |
| Rock Bit Water Deflector And Separator Grant 3,788,408 - Dysart January 29, 1 | 1974-01-29 |
| Borehole Reamer-stabilizer With Improved Fluid Circulation Grant 3,659,663 - Dysart May 2, 1 | 1972-05-02 |
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