Patent ID: 8321975

Claim:
A bed sheet comprising: a sheet restrictor having a slot and a base, wherein the base is configured to rotate, wherein the base is circular; and a sheet with four corners, where the sheet is inserted into the slot of the sheet restrictor, where the sheet restrictor further comprises a cylinder; wherein the cylinder is configured to wrap the sheet around the cylinder, wherein the cylinder is configured to laterally tighten the sheet, wherein the cylinder is aligned with an edge of the base, wherein the cylinder is capable of wrapping around the sheet on a side of a bed and tightening the sheet with power and without ripping; wherein the slot is formed from an opening in the cylinder, wherein the slot protrudes through a top of the opening in the cylinder, wherein the slot is aligned approximately tangential to the edge of the base, wherein the opening in the cylinder begins at or above the base, wherein the slot is vertical and configured to receive the sheet vertically into the slot; and four corner grips, where one corner grip is placed at each sheet corner.