Apparatus and method for applying variable pressure to a surface in corrugated paperboard manufacturing

  • US 5,611,267 A
  • Filed: 12/06/1995
  • Issued: 03/18/1997
  • Est. Priority Date: 09/22/1993
  • Status: Expired due to Term
First Claim
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1. A device for providing variable pressure to a moving surface comprising:

  • a frame;

    a conveyor for moving a surface relative to said frame, said frame positioned proximate to the moving surface;

    a plurality of pressure applicators mounted on the frame for applying pressure to said moving surface, the pressure applicators forming a row of pressure applicators substantially transverse to the direction of movement of the moving surface;

    each pressure applicator comprising,at least one foot mounted in movable relation to the frame,a pressure device for biasing the foot away from the moving surface, anda variable pressure source for variably biasing the foot against the biasing force of the pressure device to move the foot away from the frame and toward the moving surface; and

    a control device for varying the pressure supplied by each variable pressure source.

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