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Roller conveyor having an expandable and contractible flexible body drive correction

  • US 5,289,913 A
  • Filed: 02/11/1993
  • Issued: 03/01/1994
  • Est. Priority Date: 02/24/1992
  • Status: Expired due to Fees
First Claim
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1. A roller for a roller conveyor comprising a driven section freely rotatably fitted on one end of a roller shaft supported in a frame, a sleeve member freely rotatably supported on said one end through a seal device, a roller body freely rotatably supported between said driven section and the other end of said roller shaft, an expandable and contractible flexible body mounted on said sleeve member and adapted to contact the inner surface of the roller body when contracted and when expanded to press against both the inner surface of the roller body and the driven section, and a fluid feed and delivery passage which opens to the interior of said flexible body for supplying fluid to said flexible body for expanding and contacting said flexible body, said fluid feed and delivery passage extending from said roller shaft to the sleeve member.

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