US Patent 10405671 Bed maker

Disclosed are various embodiments for retaining a sheet on a mattress. A membrane comprising a plurality of extensions disposed along the perimeter of the membrane is displaced underneath a mattress. The extensions of the membrane are composed of an elastic material and the membrane is composed of a material that generates sufficient friction when in contact with the mattress to be displaced. The extensions are configured to retract to an original length, wherein the original length of each extension corresponds to a size of the mattress. Additionally, the extensions are disposed at a distance apart from each other so as to substantially retain a sheet applied on the mattress.