Patent ID: 11963851
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A  D | IPC A  D

Claim 0:
1. A headbox including a machine direction and a cross direction, the headbox comprising at least one flow section, the at least one flow section comprising:
an inlet;
an outlet;
a bottom surface;
a top surface, the top surface being opposite from the bottom surface;
a first side; and
a second side, the second side being opposite from the first side and spaced apart from the first side in the cross direction;
wherein the first side and the second side each comprise:
a first portion being convex to an interior of the at least one flow section;
a second portion being concave to the interior of the at least one flow section, wherein the first portion is closer to the inlet than is the second portion; and
a flow spreading portion, the flow spreading portion being closer to the inlet than is the first portion and providing an increasing width in the at least one flow section away from the inlet.