| 12291912 |
Door system having a swing interlock system |
Vinay Patel, Ronald Laliberte, James Cavanaugh |
2025-05-06 |
|
| 12168893 |
Slide latching system for a door system |
Vinay Patel, Ronald Laliberte, James Cavanaugh, Daniel R. Seymour |
2024-12-17 |
|
| 11555344 |
Door system having a swing interlock system |
Vinay Patel, Ronald Laliberte, James Cavanaugh |
2023-01-17 |
|
| 8997401 |
Bi-parting, bi-directional door system |
Frank Howard Luke, John Andrew Nurse, Vinay Patel |
2015-04-07 |
$46,727,000 |
| 8756864 |
Slide door |
Larry Hamaker, Prasad Anand Sahasrabudhe, Michael A. Zabbo, Vito A. Spinelli |
2014-06-24 |
$65,336,000 |
| 8627604 |
Bypass door |
Daniel R. Seymour, Vito A. Spinelli |
2014-01-14 |
$72,555,000 |
| 8443549 |
Sliding door with large opening |
Michael Arthur Salvietti, Dwight Edward Reed, Daniel R. Seymour, Michael A. Zabbo, Vito A. Spinelli +1 more |
2013-05-21 |
$58,798,000 |
| 8365469 |
Door operating system |
Michael S. Tignor |
2013-02-05 |
$60,785,000 |
| 6786006 |
Automatic door assembly and door operator therefor |
Brian D. Hass |
2004-09-07 |
$16,624,000 |
| 6588153 |
Power door kit |
— |
2003-07-08 |
$17,873,000 |
| 6553717 |
Retrofit power door assembly |
Robert A. St. John, Quan H. Nguyen |
2003-04-29 |
$15,320,000 |
| 6530178 |
Automatic door assembly and door operator therefor |
Brian D. Hass |
2003-03-11 |
$14,656,000 |
| 6481160 |
Axial door operator |
— |
2002-11-19 |
$20,892,000 |
| 6336294 |
Automatic door assembly and door operator therefor |
Brian D. Hass |
2002-01-08 |
$25,153,000 |
| 6182516 |
Low-cost, easy-to-use, dynamometer |
— |
2001-02-06 |
|
| 5949036 |
Double linear motor and elevator doors using same |
Zbigniew Piech |
1999-09-07 |
$50,494,000 |
| 5918706 |
Hold closed feature for elevator car doors |
Richard N. Fargo |
1999-07-06 |
$22,560,000 |
| 5880414 |
Elevator door brake, brake, lock, and hold-open |
Jerome F. Jaminet, Frank Guliuzza, Jr., Edward E. Ahigian, Richard E. Kulak, 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, Richard E. Kulak, Michael J. Tracey, K. Narasimha Reddy +1 more |
1999-01-26 |
$17,469,000 |
| 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, Edward E. Ahigian, Richard E. Kulak, 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 |
| 5669465 |
Elevator hoistway door bolt lock |
Richard E. Kulak, Thomas M. McHugh, Edward E. Ahigian, Jerome F. Jaminet, Thomas He +2 more |
1997-09-23 |
$16,948,000 |
| 5668355 |
Elevator cab door drive system |
Jerome F. Jaminet, Edward E. Ahigian, Thomas M. McHugh, Thomas He, Richard E. Peruggi +2 more |
1997-09-16 |
$18,140,000 |