Elevator – industrial lift truck – or stationary lift for vehicle – With barrier for regulating access to load support – Includes motor or motor driven linkage for shifting barrier
Reexamination Certificate
2006-11-28
2006-11-28
Salata, Jonathan (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
With barrier for regulating access to load support
Includes motor or motor driven linkage for shifting barrier
C187S393000
Reexamination Certificate
active
07140470
ABSTRACT:
To render the elevator landing doors fitted with an elevator control unit (5) safe, this system comprises: elevator landing door surveillance units (10), installed on each elevator landing door, to receive the state of the electrical contacts (11, 12) fitted to each of the elevator landing doors (21); synthesis unit (4) connected to the surveillance units (10) to receive the state of the elevator landing door electrical contacts (11, 12), and to the elevator control unit (5) to receive other information on the working order of the elevator; and alarm signal devices (13, 14); synthesis unit (4) further including means of determining (41) the state elevator landing doors are in according to the received information, and to actuate the signal devices (13, 14) if the state of the elevator landing doors is considered to be critical to the elevator users.
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Fish & Richardson P.C.
Salata Jonathan
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