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Roller conveyor

  • US 4,815,588 A
  • Filed: 10/19/1987
  • Issued: 03/28/1989
  • Est. Priority Date: 04/23/1987
  • Status: Expired due to Term
First Claim
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1. A roller conveyor comprising:

  • a main frame,a plurality of movable support frame means attached to said main frame so that each support frame means position lengthwise of said main frame can be changed as desired,free rollers rotatably attached to the top of said support frame means for transferring objects to be transferred,support shafts disposed in the lower region of said support frame means and extending parallel to and below the axes of said free rollers, said support shafts being vertically swingably attached to said support frame means,a transmission roller and a driven wheel which are supported on each said support shaft and rotatable as a unit,upward movement imparting means attached to said support frame means and operatively connected to said support shafts to move the latter upward, thereby pressing said transmission rollers against the lower regions of the outer peripheries of said free rollers,driving means associated with said main frame and operatively connected to said driven wheels to drive the latter.

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