Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1978-06-01
1979-07-17
Macon, Robert S.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
B66B 504
Patent
active
041612361
ABSTRACT:
An elevator system including an elevator car mounted for guided movement in the hoistway of a building having a plurality of floors. The speed of the elevator car versus its position is monitored in terminal zones adjacent to the terminal floors, as the elevator car approaches each terminal floor. An overspeed signal is generated when an overspeed condition is detected. If the elevator car is traveling towards a terminal floor in a terminal zone but is not set to decelerate and stop at the terminal floor, the conditions for issuing the overspeed signal are modified such that the issuance of the signal is advanced in time, compared with the time at which it would be provided without such modification, with the magnitude of the advancement being inversely proportional to the speed of the elevator car.
REFERENCES:
patent: 3779346 (1973-12-01), Winkler
patent: 4067416 (1978-01-01), Lowry
Duncanson Jr. W. E.
Lackey D. R.
Macon Robert S.
Westinghouse Electric Corp.
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