Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1977-07-07
1978-12-05
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 506
Patent
active
041281411
ABSTRACT:
An elevator system including an elevator car mounted for guided movement in a vertical travel path. A signal related to car velocity is modified by a signal related to car acceleration. The modified velocity signal is utilized in a speed monitoring system which monitors car speed as a function of car position adjacent the travel limits of the elevator car.
REFERENCES:
patent: 3474886 (1969-10-01), Iordanidis
patent: 3779346 (1973-12-01), Winkler
patent: 3814216 (1974-06-01), Pisatowski
patent: 4067416 (1978-01-01), Lowry
Caputo William R.
Husson Alan L.
Duncanson Jr. W. E.
Lackey D. R.
Schaefer Robert K.
Westinghouse Electric Corp.
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