Number | Name | Date | Kind |
---|---|---|---|
4308936 | Caputo et al. | Jan 1982 | |
4538706 | Koppensteiner | Sep 1985 | |
4556155 | Koppensteiner | Dec 1985 | |
4785914 | Blain et al. | Nov 1988 | |
4923055 | Holland | May 1990 | |
5183978 | Sheridan et al. | Feb 1993 |
Entry |
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Janovsky "Elevator Mechanical Design Principles & Concepts", Ellis Horwood Limited, England (1987). |