Elevator – industrial lift truck – or stationary lift for vehicle – With monitoring – signalling – and indicating means
Reexamination Certificate
2011-04-12
2011-04-12
Salata, Jonathan (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
With monitoring, signalling, and indicating means
C187S293000
Reexamination Certificate
active
07921969
ABSTRACT:
A method for restricting the output of an electrical drive and for protection of an elevator are provided. The electrical drive includes a motor as well as a power supply appliance of the motor. In the method for restricting the output of an electrical drive the stator voltage vector is restricted to its limit value restricting only the component of the stator voltages in the direction of the q axis. In the protection of an elevator, the elevator includes a machinery brake, a safety brake of the elevator car, and also an electrical drive. The protection method includes determination of at least one limit value, restriction of the output of the electrical drive on the basis of at least one determined limit value, and restriction of the movement of the elevator car on the basis of at least on determined limit value.
REFERENCES:
patent: 3941214 (1976-03-01), Young et al.
patent: 4220221 (1980-09-01), Gingrich
patent: 4751984 (1988-06-01), Williams et al.
patent: 5276292 (1994-01-01), Goto et al.
patent: 5880416 (1999-03-01), Colby et al.
patent: 6283252 (2001-09-01), Lee
patent: 6446760 (2002-09-01), Lisi
patent: 6910553 (2005-06-01), Lobbe et al.
patent: 6965212 (2005-11-01), Wang et al.
patent: 7637353 (2009-12-01), Shibata
patent: 7658268 (2010-02-01), Kinpara et al.
patent: 2002/0101221 (2002-08-01), Stefanovic et al.
patent: 2005/0212471 (2005-09-01), Patel et al.
patent: 2007/0284196 (2007-12-01), Sakai et al.
patent: 2008/0277209 (2008-11-01), Piedra et al.
patent: 02286584 (1990-11-01), None
patent: 2002-58293 (2002-02-01), None
patent: 2003-9598 (2003-01-01), None
patent: WO 97/30510 (1997-08-01), None
Kauppinen Tuukka
Stolt Lauri
Birch Stewart Kolasch & Birch, LLP.
Kone Corporation
Salata Jonathan
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