Elevator door control mechanism

Details Elevator door control mechanism Elevator door control mechanism

1997-02-07

1998-11-24

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

187334, 49360, 49125, B66B 1306

Patent

active

058395431

ABSTRACT:
An elevator includes a housing having three door panels and a lever swung to operate the door panels. A casing is secured on top of the housing and has three tracks for slidably receiving three slides which are secured to the door panels. A wire couples two of the slides to the casing for guiding the slides to move relative to the tracks, and another wire couples the other slide and the middle slide for guiding the other slide to move relative to the middle slide and for allowing the door panels to be moved safely and smoothly.

REFERENCES:
patent: 1269927 (1918-03-01), Groat
patent: 2077659 (1937-04-01), Bancroft
patent: 2303236 (1942-11-01), Fisher
patent: 2328326 (1943-08-01), Byrne
patent: 3577679 (1971-05-01), Petterborg
patent: 3707205 (1972-12-01), Gibson
patent: 4149615 (1979-04-01), Kappenhagen
patent: 4852300 (1989-08-01), Keast
patent: 5317934 (1994-06-01), Zannis
patent: 5377448 (1995-01-01), Boyd et al.
patent: 5711112 (1998-01-01), Barten et al.

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