Conveying system with tensioning assembly and method
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United States of America Patent
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-
Jun 18, 1996
Issued Date -
N/A
app pub date -
Nov 7, 1994
filing date -
May 28, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A conveying or transportation system having a haul rope (22) mounted for movement along a path, and a carrier unit (27) coupled to the haul rope (22). The carrier unit (27) is coupled to the haul rope (22) by a rope coupling assembly (51), which preferably includes a tension sensing device (139) and a screw jack tension adjustment assembly (141,142,143,144) formed to respond to sensed tension in the haul rope (22) to adjust the same at the terminals (31). The screw jack tension adjustment assembly (53) preferably includes two screw members (141,142) which are movably mounted in collar assemblies (143,144) and driven by a motor (162) to tension or relax the haul rope (22). A method of automatically maintaining and adjusting the tensioning of the haul rope (22) also is provided.
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