Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12046431 | Medium-voltage switchgear system having single phase breaker control | Robert L. Hanna, Patrick R. Fischer-Carne, Daniel C. Davis, Guillermo Alvelo, Jr., Haoning Liang | 2024-07-23 |
| 12027829 | Switchgear system having translatable and rotatable truck and associated method | Robert L. Hanna, Patrick R. Fischer-Carne, Daniel C. Davis, Guillermo Alvelo, Jr., Haoning Liang | 2024-07-02 |
| 12027830 | Switchgear system having chain driven circuit breaker and associated methods | Robert L. Hanna, Patrick R. Fischer-Carne, Daniel C. Davis, Guillermo Alvelo, Jr., Haoning Liang | 2024-07-02 |
| 11757265 | Switchgear system having translatable and rotatable truck and associated method | Robert L. Hanna, Patrick R. Fischer-Carne, Daniel C. Davis, Guillermo Alvelo, Jr., Haoning Liang | 2023-09-12 |
| 11742638 | Switchgear system having contact arm assembly for switchgear circuit breaker | Robert L. Hanna, Patrick R. Fischer-Carne, Daniel C. Davis, Guillermo Alvelo, Jr., Haoning Liang | 2023-08-29 |
| 11742639 | Switchgear system having truck driven shutter mechanism | Robert L. Hanna, Patrick R. Fischer-Carne, Daniel C. Davis, Guillermo Alvelo, Jr., Haoning Liang | 2023-08-29 |
| 11735385 | Medium-voltage switchgear system having single phase breaker control | Robert L. Hanna, Patrick R. Fischer-Carne, Daniel C. Davis, Guillermo Alvelo, Jr., Haoning Liang | 2023-08-22 |
| 11735893 | Switchgear system having chain driven circuit breaker and associated methods | Robert L. Hanna, Patrick R. Fischer-Carne, Daniel C. Davis, Guillermo Alvelo, Jr., Haoning Liang | 2023-08-22 |
| 9899810 | Switchgear enclosure with improved venting | — | 2018-02-20 |
| 9871358 | Electrical switchgear system | Rob S Karnbach | 2018-01-16 |
| 9627866 | Door mounted vent flap structure for arc-resistant compartment | Alessandro Bonfanti, Jerry Earl | 2017-04-18 |
| 9516784 | Electrical switchgear system | Rob S Karnbach | 2016-12-06 |
| 9462710 | Pressure relief system for switchgear | Harshavardan M. Karandikar, Robert S. Karnbach | 2016-10-04 |
| 9426907 | Containment system for internal arc generated gasses | Harshavardhan M. Karandikar, Robert S. Karnbach, Patrick R. Fischer-Carne | 2016-08-23 |
| 9419424 | Switchgear bus support bushing structure | Robert S. Karnbach, Harshavardhan M. Karandikar | 2016-08-16 |
| 8960815 | Switchgear enclosure with improved door assembly | Harshavardhan M. Karandikar, Radim Dolezal, Robert S. Karnbach, Patrick R. Fischer-Carne | 2015-02-24 |
| 8891229 | Locking structure for a truck of a switchgear drawout circuit breaker | Patrick R. Fischer-Carne, Robert S. Karnbach | 2014-11-18 |
| 8835782 | Contact arm assembly for switchgear circuit breaker having improved cooling fins and contact fingers to maximize heat rejection | Patrick R. Fischer-Carne, Robert S. Karnbach | 2014-09-16 |
| 8695358 | Switchgear having evaporative cooling apparatus | Patrik Kaufmann, Tilo Buehler, Harshavardhan M. Karankikar, Jerry Earl, Gabriel Schuler | 2014-04-15 |
| 8383970 | Restraint system for switchgear drawout breakers | Harshavardhan M. Karandikar, Ronald Holmes | 2013-02-26 |