Number | Name | Date | Kind |
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3619750 | Mokrytzki et al. | Nov 1971 | |
4869347 | Takahashi | Sep 1989 | |
4982816 | Doi et al. | Jan 1991 | |
5077508 | Wycoff et al. | Dec 1991 | |
5157228 | Ackermann et al. | Oct 1992 | |
5229558 | Hakala | Jul 1993 | |
5325036 | Diethert et al. | Jun 1994 | |
5345048 | Towey, Jr. | Sep 1994 | |
5531294 | Curton et al. | Jul 1996 | |
5677519 | Herkel et al. | Oct 1997 |
Number | Date | Country |
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0607646 | Jul 1994 | EPX |
Entry |
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Abstract of Jpanese Patent Application Laid open JP 401252193A; Speed Controller for Inverter; Doi Kazuhiko, Yamada Koji, Oct. 6, 1989. |
Copy of U.S. patent application Ser. No. 08/610,101 entitled "Elevator Leveling Adjustment" filed Feb. 29, 1996, Peter Herkel, et al. |
Copy of U.S. patent application Ser. No. 08/708,138 entitled "Adaptive Load Compensation for an Elevator System" filed Aug. 27, 1996, Christophe M. Ernecke, et al. |