Elevator system having microprocessor-based door operator

Details Elevator system having microprocessor-based door operator Elevator system having microprocessor-based door operator

1987-12-03

1989-05-23

Shoop, Jr., William M.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 1308

Patent

active

048321583

ABSTRACT:
An elevator system has a door operator with a door operator motor and a dedicated microprocessor for storing door open and door close cycles. The microprocessor initiates door open and close cycles responsive to external door open and door close commands. Preferably the microprocessor stores a plurality of door closed cycles in which the elevator controller selects one of the cycles when issuing a door closed command.

REFERENCES:
patent: 4299308 (1981-11-01), Shung et al.
patent: 4300660 (1981-11-01), Schoenmann et al.
patent: 4300663 (1981-11-01), Hmelousky et al.
patent: 4305481 (1981-12-01), Hmelousky et al.

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