Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12146589 | Actuator assembly for conducting partial stroke testing | — | 2024-11-19 |
| 11879564 | Rotary valve lockout apparatus | — | 2024-01-23 |
| 10533583 | System for determining safety margin of an installed driven member | James R. Howard | 2020-01-14 |
| 10132337 | Actuator assembly for conducting partial stroke testing | James R. Howard | 2018-11-20 |
| 9464719 | Seal assembly for use in harsh environments | James R. Howard | 2016-10-11 |
| 8863596 | Flat yoke valve actuator | — | 2014-10-21 |
| 8087316 | Flat yoke valve actuator | — | 2012-01-03 |
| 5538029 | Method for adjusting valve sealing engagement | — | 1996-07-23 |
| 5492050 | Pneumatic actuator with rack and pinion assembly | — | 1996-02-20 |
| 5386761 | Rotary valve actuator | — | 1995-02-07 |
| 5244183 | Fugitive emission sealing assembly | Douglas G. Calvin | 1993-09-14 |
| 4711427 | Apparatus for connecting a valve element to a valve stem | — | 1987-12-08 |
| RE32409 | Valve assembly | — | 1987-04-28 |
| 4570901 | Positioning assembly for use with rotatable valves | — | 1986-02-18 |
| 4410163 | Valve seat | William B. Scobie | 1983-10-18 |
| 4399833 | Valve assembly | — | 1983-08-23 |