Patent ID: 7028756
Filing Date: 2006-04-18
Classification: D21F

Abstract:
1. An apparatus for increasing a transfer of thermal energy through an inner surface of a hollow cylindrical dryer of a papermaking machine to a peripheral outer surface of the dryer, said apparatus comprising: a plurality of bars of rectangular cross-sectional configuration, each of said bars extending axially within the dryer, said bars being disposed spaced and parallel relative to each other with each of said bars being urged radially outward against the inner surface of the dryer; each of said bars defining an axially extending enclosure: a mechanism for urging each of said bars radially outward against the inner surface of the dryer; a plurality of hoop rings spaced axially within the dryer, each hoop ring being disposed normal to an axis of rotation of the dryer; each hoop ring includes: a plurality of segments; an adjuster having a first and a second end, said adjuster extending through and being guided by said second orifice of said first segment and said first aperture of said second segment such that said first end of said adjuster is disposed adjacent to said second orifice and said second end of said adjuster is disposed adjacent to said first aperture; said adjuster further includes; a radially extending collar disposed between said first and second ends of said adjuster, said collar bearing against said first limb when said second end of said adjuster is extending through said first aperture; a guide portion extending between said collar and said second end of said adjuster for guiding said second end of said adjuster within said first aperture; a threaded portion extending between said collar and said first end of said adjuster such that said threaded portion extends through said second orifice; and a movable member threadably cooperating with said threaded portion so that said movable member bears against said second arm when said threaded portion extends through said second orifice, the arrangement being such that when said threaded portion is rotated relative to said movable member, said movable member and said collar move away from each other so that said second arm of said first segment is urged away from said first limb of said second segment such that said hoop ring is expanded for urging each of said bars outwardly away from said axis of rotation of the dryer towards the inner surface of the dryer.