Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6202797 | Automatic protection of elevator mechanics | Steven M. Skolnick, Chester J. Slabinski | 2001-03-20 |
| 6095288 | Pit-less elevator | James A. Rivera, Bruce St. Pierre | 2000-08-01 |
| 5366060 | Balustrade handrail entry housing | Gerald E. Johnson, Ronald Laliberte, Willy Adrian, Gerald Wente, R. Zimmerman | 1994-11-22 |
| D348756 | Escalator handrail entry housing | Dale R. Barrett, Gerald E. Johnson, Ronald Laliberte, John T. Pitts, Willy Adrian +2 more | 1994-07-12 |
| 5215177 | Escalator skirt and deck panel quick release fastener assembly | Gerald E. Johnson | 1993-06-01 |
| 5180047 | Balustrade and deck mounting assembly for escalator or moving walkway | Dale R. Barrett, Dat Nguyen | 1993-01-19 |
| 5131521 | Moving handrail drive | Gerald E. Johnson, James A. Rivera, Dat Nguyen | 1992-07-21 |
| 5062520 | Self adjustable handrail drive with separate drive chains | Dat Nguyen, Gerald E. Johnson, James A. Rivera | 1991-11-05 |
| 5050721 | Step riser profile for curved escalator | Peter Borchers, Knut Wallbaum | 1991-09-24 |
| 5020654 | Curved escalator step chain turnaround zone | Klaus Seehausen, James A. Rivera | 1991-06-04 |
| 5009302 | Curved escalator with fixed center constant radius path of travel | — | 1991-04-23 |
| 4984671 | Balustrade radius development for curved escalator | Dat Nguyen | 1991-01-15 |
| 4949832 | Curved escalator with vertical planar step risers and constant horizontal velocity | — | 1990-08-21 |
| 4930622 | Curved escalator with fixed center constant radius path of travel | — | 1990-06-05 |
| 4895239 | Curved escalator with fixed center constant radius path of travel | Gerald E. Johnson, Dat Nguyen | 1990-01-23 |
| 4883160 | Curved escalator with fixed center constant radius path of travel | Klaus Seehausen, James A. Rivera, Dat Nguyen, Peter Borchers | 1989-11-28 |