Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7210974 | Slip-on linkage | — | 2007-05-01 |
| 7102101 | High voltage circuit breaker with internal tank heater | David Scott Johnson, Daniel Schiffbauer | 2006-09-05 |
| 6870455 | System and method for high accuracy activation of a mechanism via a solenoid | — | 2005-03-22 |
| 6651483 | Low leak gas density monitor assembly | Willie B. Freeman, Caroline Komlenic | 2003-11-25 |
| 6495785 | Non-glue mounting of non-metallic tubes | — | 2002-12-17 |
| 6410867 | Bolted conical loading joint system | — | 2002-06-25 |
| 6263914 | Gas density monitor assembly | Willie B. Freeman | 2001-07-24 |
| 5889248 | Operating mechanism for combined interrupter disconnect switch | Horst Plettner, Willie B. Freeman, Thomas Hertig, Anthony S. Masarik | 1999-03-30 |
| 5654532 | Moving interrupter gap shield | Joachim Stechbarth, Kurt Kaltenegger | 1997-08-05 |
| 5638296 | Intelligent circuit breaker providing synchronous switching and condition monitoring | David Scott Johnson, Aftab Khan, Paul H. Stiller | 1997-06-10 |
| 5636134 | Intelligent circuit breaker providing synchronous switching and condition monitoring | David Scott Johnson, Aftab Khan, Paul H. Stiller | 1997-06-03 |
| 5629869 | Intelligent circuit breaker providing synchronous switching and condition monitoring | David Scott Johnson, Aftab Khan, Paul H. Stiller | 1997-05-13 |
| 5585610 | Moving gas mixing plate for puffer interrupter | Joachim Stechbarth, Kurt Kaltenegger | 1996-12-17 |
| 5576523 | Independent pole operation linkage | — | 1996-11-19 |
| 5569891 | High performance circuit breaker with independent pole operation linkage and conical composite bushings | Willie B. Freeman, David Scott Johnson | 1996-10-29 |
| 5508487 | High voltage circuit interrupting device operating mechanism including trip latch assembly | David W. Smith | 1996-04-16 |
| 5504289 | Circuit switching mechanism and charging system therefor | David W. Smith, Tomas Otterberg | 1996-04-02 |
| 5495084 | Slip-through mounting structure for circuit interrupter | Tomas Otterberg | 1996-02-27 |
| 5201555 | Dogging mechanism | — | 1993-04-13 |
| 5199369 | Water tight door | Richard P. Kole, Kevin V. Bridge | 1993-04-06 |
| 5112065 | Double directional gasket | Richard P. Kole | 1992-05-12 |
| 4743709 | Gas insulated transmission line with support insulator hardware arrangements | Albert P. Munroe, Melvyn D. Hopkins, Gary K. Bowman, Richard E. Kane | 1988-05-10 |
| 4721829 | Gas insulated transmission line with shielded electrical joint assembly | Melvyn D. Hopkins, Gary K. Bowman | 1988-01-26 |
| 4711973 | Gas insulated transmission line with simplified insulator assembly and method of assembling same | Albert P. Munroe, Philip C. Bolin | 1987-12-08 |
| 4641000 | Actuator for electrical circuit interrupter using nitrocellulose type solid propellant | Ronald W. Crookston | 1987-02-03 |