Patent ID: 7373697
Filing Date: 2008-05-20
Classification: B42F,Y10T

Abstract:
1. A device for securing non-magnetic sheet material having a thickness of less than about one millimeter, said device comprising a first base inferior planar sheet and a second superior planar sheet said first and second planar sheets having longitudinal dimensions, parallel to a longitudinal axis of at least one hinge connecting the planar sheets, that vary from each other by less than fifteen percent, said first planar sheet having an aspect ratio of longitudinal dimension to a perpendicular dimension perpendicular thereto of between about 20:1 and about 0.6:1 and having at least one essentially linear first planar sheet longitudinal edge parallel to the longitudinal axis of the hinge and said second planar sheet having an aspect ratio of longitudinal dimension to a perpendicular dimension perpendicular thereto of from about 40:1 to about 15:1 where the second planar sheet aspect ratio is always greater than the first planar sheet aspect ratio and having at least one essentially linear second planar sheet first longitudinal edge parallel to the longitudinal axis of the hinge, each of said planar sheets comprising ferro-magnetic material, wherein at least one of the planar sheets comprises permanently magnetized ferro-magnetic material, said first and second planar sheets being connected by the at least one hinge passing through holes in each of said planar sheets proximate their respective longitudinal edges such that at least said second planar sheet can be rotated on said hinge on an axis proximate said longitudinal edges so that the ferro-magnetic material of the second planar sheet can be rotated toward the ferro-magnetic material of the first planar sheet so that the ferro-magnetic materials are attracted to each other to trap the non-magnetic sheet material between the first and second planar sheets to secure the non-magnetic sheet between them, the ferro-magnetic material of the second planar sheet running proximate a second edge of the second planar sheet opposite the first edge of the second planar sheet so that the second planar sheet does not obscure a significant portion of the non-magnetic sheet material beyond the ferro-magnetic material of the second planar sheet.