Patent ID: 8177541

Claim:
A gypsum board forming device for facilitating slurry spread prior to a pinch point, the device comprising: a gypsum slurry mixing device including first and second slurry outlets; a first forming table having an upper surface; a lower supply roll supplying a bottom facing sheet to the upper surface of the first forming table, the first slurry outlet supplying slurry over the bottom facing sheet; a roll coater positioned along the first forming table and functioning to spread the gypsum slurry over the bottom facing sheet; a second forming table, the second forming table having side edges, a central area, and a first arcuate cross section, the first arcuate cross section defined by a raised central area and lower side edges, the second slurry outlet supplying additional slurry to the bottom facing sheet along the second forming table, the first arcuate cross section promoting the distribution of slurry; a third forming table having an upper surface, side edges, and a second arcuate cross section defined by a raised central area and lower side edges, the first arcuate cross section being greater than the second arcuate cross section; an upper supply roll supplying a top facing sheet to the third forming table; a hinge plate and an extruder plate pivotally interconnected at the pinch point along the third forming table, the hinge plate and the extruder plate each having a proximal end, a distal end, and a longitudinal axis, the distal end of the hinge plate having a third arcuate cross section, the third arcuate cross section being opposite to the second arcuate cross section, the hinge plate being positioned at an angle relative to the third forming table, the third arcuate cross section functioning to create a slurry head prior to the pinch point, wherein the second arcuate cross section of the third forming table and the third arcuate cross section of the hinge plate causes the slurry to flow to the side edges and thereby facilitate distribution of slurry prior to the pinch point.