Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D342056 | Escalator power button housing | Robert D. Kaplan | 1993-12-07 |
| D338309 | Barrier panel for escalators | Gerald E. Johnson, Arthur McClement | 1993-08-10 |
| 5188209 | Handrail roller bow adjustment | Gerald E. Johnson, Arthur McClement | 1993-02-23 |
| 5186302 | Escalator skirt and deck panel installation | Gerald E. Johnson, Arthur McClement | 1993-02-16 |
| 5186301 | Isolation of escalator step tread | — | 1993-02-16 |
| 5133443 | Self adjustable escalator handrail drive with balanced drive chain tension | Gerald E. Johnson | 1992-07-28 |
| 5131520 | Escalator handrail guide | Gerald E. Johnson, Arthur McClement | 1992-07-21 |
| 5131521 | Moving handrail drive | Gerald E. Johnson, Frank Sansevero, Dat Nguyen | 1992-07-21 |
| 5117968 | Assembly for cleaning the underside of an escalator handrail | — | 1992-06-02 |
| 5062520 | Self adjustable handrail drive with separate drive chains | Dat Nguyen, Frank Sansevero, Gerald E. Johnson | 1991-11-05 |
| 5033607 | Handrail newel guide assembly for an escalator | — | 1991-07-23 |
| 5029690 | Decking trim fastening for curved escalator | Dat Nguyen, Willy Adrian, Joerg Rabing | 1991-07-09 |
| 5030028 | Handrail drive wheel mount assembly | Lance L. Lavender | 1991-07-09 |
| 5020654 | Curved escalator step chain turnaround zone | Frank Sansevero, Klaus Seehausen | 1991-06-04 |
| 5018616 | Balanced self adjustable escalator handrail drive | Gerald E. Johnson | 1991-05-28 |
| 5005673 | Coordinated elevator car door-hall door movement | — | 1991-04-09 |
| 4998613 | Self adjustable escalator handrail drive | Gerald E. Johnson | 1991-03-12 |
| 4946020 | Low friction escalator handrail guide | Gerald E. Johnson | 1990-08-07 |
| 4934506 | Escalator handrail guide rail | — | 1990-06-19 |
| 4932512 | Escalator handrail guide rail mounting assembly | — | 1990-06-12 |
| 4901839 | Self adjustable escalator handrail drive | Gerald E. Johnson | 1990-02-20 |
| 4884673 | Curved escalator with fixed center constant radius path of travel | — | 1989-12-05 |
| 4883160 | Curved escalator with fixed center constant radius path of travel | Frank Sansevero, Klaus Seehausen, Dat Nguyen, Peter Borchers | 1989-11-28 |