Top opening door assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 24, 1985
Grant Date -
N/A
app pub date -
Sep 9, 1983
filing date -
Sep 9, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Top closing doors are pivotally mounted on a trailer and are provided with a driving mechanism including a drive cylinder connected by a pin to an endless chain extended in figure-eight fashion around opposed sprockets at the ends of the trailer. The doors are driven by swinging arms connected to the sprockets so as to move in opposite directions during opening and closing and provide full 270.degree. opening movement. The chain includes a master drive link to provide driving stability and an adjustable link passing in guiding relationship to the master link and for providing the required driving tension. The master link is driven by a drive pin connected to a hydraulic cylinder.
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Family
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Cited Art Landscape
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