Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6059293 | Split mechanical face seal with seal face fluid introducing structure | Bo Ruan, Shifeng Wu, Marlen S. Clark | 2000-05-09 |
| 5938205 | Method and apparatus for optimizing barrier fluid flow for promoting cool running of a cartridge dual seal | Arch Ray Clark | 1999-08-17 |
| 5913520 | Centering devices for a split mechanical seal | Marlen S. Clark | 1999-06-22 |
| 5725220 | Securing and centering devices for a split mechanical seal | Marlen S. Clark | 1998-03-10 |
| 5711532 | Securing and centering devices for a split mechanical seal | Marlen S. Clark | 1998-01-27 |
| 5571268 | Universal split mechanical seal | — | 1996-11-05 |
| 5544897 | Cartridge seal having a high contact pressure seal and means for intersleeve adjustment including quench fluid delivery | Larry Di Pietro | 1996-08-13 |
| 5489105 | Sleeve for shaft seal | Ann T. Attenasio, Margaret B. Willbrant | 1996-02-06 |
| 5333882 | Balanced mechanical seal assembly and flow ring therefor | Margaret B. Willbrant, Ann T. Attenasio | 1994-08-02 |
| 5213340 | Balanced mechanical seal | Margaret B. Willbrant, Ann T. Attenasio | 1993-05-25 |
| 5209496 | Universal seal or packing gland | Margaret B. Willbrant, Marlen S. Clark, Ann T. Attenasio | 1993-05-11 |
| 5203575 | Balanced mechanical seal assembly and flow ring therefor | Margaret B. Willbrant, Ann T. Attenasio | 1993-04-20 |
| 4625977 | Convertible, stand-by rotary seal assembly | Robert E. Rockwood | 1986-12-02 |
| 4576384 | Split mechanical face seal | — | 1986-03-18 |