US 12,221,749 B2
Roller
Dominik Marusa, Heidenheim (DE); José Luiz Campos Souza, Heidenheim (DE); and Thomas Martin, Langenau (DE)
Assigned to Voith Patent GmbH, Heidenheim (DE)
Filed by Voith Patent GmbH, Heidenheim (DE)
Filed on Dec. 16, 2022, as Appl. No. 18/082,958.
Application 18/082,958 is a continuation of application No. PCT/EP2021/063815, filed on May 25, 2021.
Claims priority of application No. 10 2020 115 802.5 (DE), filed on Jun. 16, 2020.
Prior Publication US 2023/0117841 A1, Apr. 20, 2023
Int. Cl. D21F 3/08 (2006.01); D21F 3/04 (2006.01)
CPC D21F 3/08 (2013.01) [D21F 3/04 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A roller for producing a fibrous web, the roller comprising:
a rotationally symmetrical base body which is rotatable about a longitudinal axis; and
a shell surface on which there are arranged at least two elastically deformable and/or deflectable ring-shaped or spiral lamellas which extend away from the shell surface in a radial direction, the lamellas surround the base body in a circumferential direction, wherein the lamellas are arranged at least in sections at an angle diagonally relative to a center plane of the roller, the center plane being aligned perpendicular to the longitudinal axis of the roller, thus forming the angle in the form of an angle of inclination, the lamellas being inclined toward the center plane of the roller and are arranged to transversely compress the fibrous web, wherein the angle of inclination of the lamellas varies in an axial direction of the roller, wherein the angle of inclination of the lamellas increases from an edge of the roller towards the center plane, wherein a distance between two adjacent connection points of the lamellas with the shell surface increases in the axial direction towards the center plane of the roller.