Friction-drive carriage type conveyor

Details Friction-drive carriage type conveyor Friction-drive carriage type conveyor

2007-02-06

2007-02-06

Morano, S. Joseph (Department: 3617)

Railways

Traction

Reexamination Certificate

active

10912373

ABSTRACT:
A friction-drive carriage type conveyor includes a carriage1so supported as to run in a running direction along a track, which includes a linear path and a turning path18. The carriage1has a frictional surface6acontinuing linearly along its whole length. The conveyor is fitted with first friction drive rollers15for contact with the frictional surface6a, which are positioned near the linear path. The conveyor is also fitted with second friction drive rollers15A–15C for driving the carriage1smoothly and reliably even along the turning path18. The second friction drive rollers15A–15C are spaced at intervals along the turning path18, which are shorter than the frictional surface6a. The second friction drive rollers15A–15C are so supported that each of them can move between an advance limit position and a retraction limit position. The advance limit position is on the locus described by the frictional surface6awhen the carriage1passes along the turning path18. The retraction limit position is outside the locus. Each of the second friction drive rollers15A–15C can be biased toward the associated advance limit position by a biasing means, which may be a hydraulic cylinder25. Each of the second friction drive rollers15A–15C comes into compressive contact with the frictional surface6aof the carriage1driven forward by the just upward friction drive roller and drives the carriage to a position where the frictional surface comes into compressive contact with at least the just downstream friction drive roller.

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patent: 2000-177584 (2000-06-01), None
patent: 3502977 (2003-12-01), None

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