Bi-parting elevator door actuator apparatus

Details Bi-parting elevator door actuator apparatus Bi-parting elevator door actuator apparatus

1994-12-19

1997-06-10

Terrell, William E.

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

187315, 187316, 187334, 187335, 187280, B66B 1306

Patent

active

056367147

ABSTRACT:
A bi-parting elevator door actuator apparatus operably connected to a bi-parting door assembly having 1) a door interlock and power control assembly; 2) a bi-fold door actuator assembly; and 3) an electrical control circuit. The door interlock and power control assembly includes 1) a door latch assembly connected to the bi-parting door assembly to hold in a closed position; 2) a cam roller and linkage assembly engagable with the bi-parting door assembly to open and close a first power relay assembly; and 3) a door actuated power assembly having a second power relay assembly operable to be opened on opening of the bi-parting door assembly. An elevator drive motor is denied electrical power when a) the bi-parting door assembly is in an open position; and b) the traveling elevator car assembly reaches a predetermined position for stopping. A bi-fold door actuator assembly is connected to the bi-parting door assembly and having an actuator clutch assembly to prevent damage and recycle when an obstruction is present between closing upper and lower panel assemblies of the bi-parting door assembly. A specially designed roller and roller adjustment assembly is provided to reduce friction and achieve accurate vertical alignment during opening and closing of the bi-parting door assembly.

REFERENCES:
patent: 1904009 (1933-04-01), Peelle
patent: 2484679 (1949-10-01), Borden
patent: 4149615 (1979-04-01), Kappenhagen
patent: 4364454 (1982-12-01), Glaser et al.

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