Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1977-03-09
1978-11-07
Schaefer, Robert K.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
B66B 302
Patent
active
041241037
ABSTRACT:
An elevator system including an elevator car and electrical control for operating same. Capacitors continue to energize a car movement detector in the electrical control following an interruption in the electrical power supply, to enable any movement of the elevator car following such interruption to be detected and stored. A stored indication of car movement following an interruption in the electrical power supply is used to correct a car position device in the electrical control.
REFERENCES:
patent: 3750850 (1973-08-01), Winkler et al.
patent: 3995719 (1976-12-01), Mandel et al.
patent: 4009766 (1977-03-01), Satoh
Leang William N.
Otto Paul R.
Duncanson Jr. W. E.
Lackey D. R.
Schaefer Robert K.
Westinghouse Electric Corp.
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