Elevator – industrial lift truck – or stationary lift for vehicle – With monitoring – signalling – and indicating means – Monitors operational parameter
Patent
1994-05-16
1995-06-27
Stephan, Steven L.
Elevator, industrial lift truck, or stationary lift for vehicle
With monitoring, signalling, and indicating means
Monitors operational parameter
187391, 187316, 187277, B66B 502
Patent
active
054272076
ABSTRACT:
An elevator control apparatus capable of reducing the risk of passengers being confined in an elevator car and capable of preventing damage to equipment as well as danger to passengers. The apparatus includes a safety circuit for detecting an abnormality of the elevator, a flip-flop for storing the operation of the safety circuit, a door-openable region detecting circuit for detecting that a position at which the car is stopped is within a region within which the door of the car can be opened, a control circuit for effecting a rescue operation on the basis of the outputs of the flip-flop and the door-openable region detecting circuit. After an operation of the safety circuit a control circuit continuously outputs a signal for canceling the memory of the flip-flop 35 after the passage of a first predetermined period of time until a second predetermined period of time passes. After the passage of the second predetermined period of time, the elevator car is prohibited from starting.
REFERENCES:
patent: 4067416 (1978-01-01), Lowry
patent: 4350225 (1982-09-01), Sakata et al.
patent: 4367810 (1983-01-01), Doane et al.
patent: 4982815 (1991-01-01), Arabori et al.
Mitsubishi Denki & Kabushiki Kaisha
Nappi Robert
Stephan Steven L.
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