Method and apparatus for reducing elevator service calls

Details Method and apparatus for reducing elevator service calls Method and apparatus for reducing elevator service calls

1985-03-04

1986-11-18

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 502

Patent

active

046230408

ABSTRACT:
A method and apparatus for reducing unnecessary elevator service calls by cycling open and shut a nonresponsive car's door, is disclosed. The doors are cycled in the presence of car demand and indications the car door is shut but the hoistway door is ajar. The doors are cycled only after these conditions persist for a selected period.

REFERENCES:
patent: 3882969 (1975-05-01), Podcameni et al.
patent: 4367810 (1983-01-01), Doane et al.
patent: 4505360 (1985-03-01), Tsuji

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