Patent | Date |
---|
Procedure for the determination of message identification in the data transmission network of an elevator system Grant 5,502,818 - Lamberg March 26, 1 | 1996-03-26 |
Procedure for reducing the starting current of a squirrel-cage motor, and a squirrel-cage motor unit designed for implementing the procedure Grant 5,451,854 - Uuskoski September 19, 1 | 1995-09-19 |
Safety device arrangement Grant 5,411,117 - Hayrinen May 2, 1 | 1995-05-02 |
Traction sheave elevator Grant 5,370,205 - Vanhala December 6, 1 | 1994-12-06 |
Procedure for the regulation of an asynchronous motor Grant 5,194,797 - Kahkipuro March 16, 1 | 1993-03-16 |
Procedure and apparatus for the measurement of the currents in a frequency converter Grant 5,163,172 - Hakala November 10, 1 | 1992-11-10 |
Safety gear for an elevator Grant 5,159,995 - Sissala , et al. November 3, 1 | 1992-11-03 |
Control valve for a hydraulic elevator Grant 5,156,080 - Pelto-Huikko October 20, 1 | 1992-10-20 |
Procedure and apparatus for protection of a data transmission network Grant 5,153,808 - Juntunen , et al. October 6, 1 | 1992-10-06 |
Device and procedure for opening of an elevator Grant 5,141,080 - Kujala August 25, 1 | 1992-08-25 |
Procedure for mounting the guide rails for an elevator car or counterweight, and a mounting system implementing the procedure Grant 5,119,908 - Korhonen June 9, 1 | 1992-06-09 |
Elevator safety apparatus Grant 5,096,020 - Korhonen March 17, 1 | 1992-03-17 |
Rope suspension system for an elevator Grant 5,076,398 - Heikkinen December 31, 1 | 1991-12-31 |
Procedure and apparatus for transmitting binary messages in a serial communication bus Grant 5,063,561 - Kimmo November 5, 1 | 1991-11-05 |
Method and apparatus for the measurement and tuning of an elevator system Grant 5,042,621 - Ovaska , et al. August 27, 1 | 1991-08-27 |
Method and device for braking a squirrel-cage motor Grant 4,908,563 - Suur-Askola March 13, 1 | 1990-03-13 |
Method for sub-zoning an elevator group Grant 4,895,223 - Ekholm , et al. January 23, 1 | 1990-01-23 |
Bi-directional d.c./d.c. converter compatible with an inverter bridge Grant 4,894,765 - Kahkipuro January 16, 1 | 1990-01-16 |
Method for selecting the mode of operation of an object counting means Grant 4,870,663 - Kulju , et al. September 26, 1 | 1989-09-26 |
Method for coordinating elevator group traffic Grant 4,838,385 - Ekholm June 13, 1 | 1989-06-13 |
Arrester device for elevators Grant 4,819,765 - Winkler , et al. April 11, 1 | 1989-04-11 |
Elevator motor control Grant 4,791,346 - Kahkipuro December 13, 1 | 1988-12-13 |
Counteracting elevator car oscillation Grant 4,750,590 - Otala June 14, 1 | 1988-06-14 |
Method of and apparatus for controlling the braking resistor of a frequency converter Grant 4,737,900 - Kahkipuro , et al. April 12, 1 | 1988-04-12 |