| 11795033 |
Elevator car door interlock |
Michael J. Tracey |
2023-10-24 |
|
| 11661315 |
Monitoring system, elevator door system having monitoring system, and method |
Michael J. Tracey |
2023-05-30 |
|
| 11655122 |
Elevator door in interlock assembly |
Michael J. Tracey |
2023-05-23 |
|
| 11254542 |
Car door interlock |
Michael J. Tracey |
2022-02-22 |
|
| 11247872 |
Elevator car door interlock |
Michael J. Tracey |
2022-02-15 |
|
| 11124389 |
Elevator car door interlock |
Michael J. Tracey |
2021-09-21 |
|
| 11046557 |
Elevator door interlock assembly |
Michael J. Tracey |
2021-06-29 |
|
| 11040858 |
Elevator door interlock assembly |
Michael J. Tracey |
2021-06-22 |
|
| 11034548 |
Elevator door interlock assembly |
Michael J. Tracey |
2021-06-15 |
|
| 10882720 |
Elevator car door interlock |
Michael J. Tracey |
2021-01-05 |
|
| 10710843 |
Car door interlock with sill lock |
Michael J. Tracey |
2020-07-14 |
|
| 10569994 |
Monitoring system, elevator door system having monitoring system, and method |
Michael J. Tracey |
2020-02-25 |
|
| 10486940 |
Alignment system for an elevator car |
Tadeusz Pawel Witczak, Bruce P. Swaybill, Zbigniew Piech, Richard J. Ericson |
2019-11-26 |
|
| 8272481 |
Guide assembly for at least one elevator door |
Michael J. Tracey |
2012-09-25 |
|
| 7543686 |
Elevator with rollers having selectively variable hardness |
Michael J. Tracey |
2009-06-09 |
$99,685,000 |
| 6457569 |
Rotary actuated overspeed safety device |
James M. Draper |
2002-10-01 |
$39,989,000 |
| 6446759 |
Door coupler and latch system for elevator car and landing doors |
Michael J. Tracey |
2002-09-10 |
$65,127,000 |
| 6296080 |
Variable traction mechanism for rotary actuated overspeed safety device |
James M. Draper |
2001-10-02 |
$58,185,000 |
| 5880414 |
Elevator door brake, brake, lock, and hold-open |
Jerome F. Jaminet, Thomas M. Kowalczyk, Frank Guliuzza, Jr., Edward E. Ahigian, Thomas M. McHugh +3 more |
1999-03-09 |
$22,278,000 |
| 5862887 |
High performance linear induction motor door operator |
Bruce P. Swaybill, William L. King, Thomas M. Kowalczyk, Michael J. Tracey, K. Narasimha Reddy +1 more |
1999-01-26 |
$17,469,000 |
| 5819877 |
Elevator evacuation deterrent device |
James A. Rivera, Michael J. Tracey, Valery Sheynkman, Duane R. Stupienski, Blair J. Cohen |
1998-10-13 |
$7,198,000 |
| 5808246 |
Triac drive for three-phase line-powered linear induction motor elevator door operator |
Richard E. Peruggi, Thomas M. McHugh, Edward E. Ahigian, Jerome F. Jaminet, Thomas He +3 more |
1998-09-15 |
$6,891,000 |
| 5736693 |
Elevator door drive using dual secondary linear induction motor |
Zbigniew Piech, Jerome F. Jaminet, Thomas M. Kowalczyk, Edward E. Ahigian, Thomas M. McHugh +3 more |
1998-04-07 |
$14,131,000 |
| 5732796 |
Elevator car evacuation deterrent device |
Edward E. Ahigian, David W. Barrett, Thomas M. McHugh, Jerome F. Jaminet, Thomas He +2 more |
1998-03-31 |
$17,285,000 |
| 5682023 |
Time-optimal control of an AC line-driven linear motor elevator door operator |
Thomas M. McHugh, Richard E. Peruggi, Edward E. Ahigian, Jerome F. Jaminet, Thomas He +2 more |
1997-10-28 |
$11,835,000 |