Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5890564 | Apparatus to inspect hoisting ropes | Eric G. Olsen | 1999-04-06 |
| 5886308 | Rope speed monitoring assembly and method | Richard J. Ericson, Thomas J. Hoffman | 1999-03-23 |
| 5881845 | Elevator rope protective device | Eric G. Olsen, Randy G. Henley | 1999-03-16 |
| 5881843 | Synthetic non-metallic rope for an elevator | Eric G. Olsen | 1999-03-16 |
| 5792294 | Method of replacing sheave liner | John Randazzo, John D. Barrett, Christopher J. Elliott, David Wayne Mckee, John P. Wesson +1 more | 1998-08-11 |
| 5112933 | Ether-based polyurethane elevator sheave liner-polyurethane-urea made from polyether urethane prepolymer chain extended with polyester/diamine blend | Vincent J. Gajewski | 1992-05-12 |