| 9010499 |
Multi-car elevator hoistway separation assurance |
Richard C. McCarthy, Richard E. Peruggi, Randall Keith Roberts, Harold Terry, Gilbert W. Wierschke |
2015-04-21 |
| 8939262 |
Elevator over-acceleration and over-speed protection system |
Daryl J. Marvin, Harold Terry, James M. Draper, Anthony Cooney, Jose M. Carballo |
2015-01-27 |
| 8827044 |
Over-acceleration and over-speed detection and processing system |
Daryl J. Marvin, Harold Terry, James M. Draper, Anthony Cooney, Jose M. Carballo |
2014-09-09 |
| 8631909 |
Electromagnetic safety trigger |
James M. Draper, Harold Terry, Daryl J. Marvin, Anthony Cooney, Jose M. Carballo |
2014-01-21 |
| 8292038 |
Control device for operating two elevator cars in a single hoistway |
Richard C. McCarthy, Harold Terry |
2012-10-23 |
| 7819228 |
Collison prevention in hoistway with two elevator cars |
Harold Terry, Frank Sansevero |
2010-10-26 |