US Patent 10098485 Bed foundation cover and method of fabrication

A foundation or box spring cover for use in conjunction with a box spring comprising four panels configured to fit over edges of the box spring, at least two of the panels being adjacent panels of exposed, continuous, non-stretch fabric, and at least one stretchable panel positioned at a corner of the cover and configured to be oriented at an underside of the box spring. In one aspect the cover includes a hem configured to extend under the edges of the box spring, and where the triangular panel is off-set from the edges of the box spring. The hem is configured to have a concealed edge that operates to catch upon a bottom edge of the foundation to secure the sides of the cover into position so as to withstand a housekeeping action applied to the bedding such as tucking in bedding between a mattress and the foundation. A method of manufacture includes stretching the stretchable panel prior to sewing onto adjacent hems.