US 11,054,147 B1
Floor heating system including membranes that are configured to be joined together to house a heating cable, and flooring underlayment including such membranes
Chase Warneke, Pierce, NE (US); Alan B. Collison, Pierce, NE (US); and Reid Borgman, Norfolk, NE (US)
Assigned to MP Global Products, L.L.C., Norfolk, NE (US)
Filed by MP Global Products, L.L.C., Norfolk, NE (US)
Filed on Nov. 9, 2020, as Appl. No. 17/93,610.
Application 17/093,610 is a continuation of application No. 16/885,782, filed on May 28, 2020.
This patent is subject to a terminal disclaimer.
Int. Cl. F24D 3/14 (2006.01); E04F 15/18 (2006.01)
CPC F24D 3/142 (2013.01) [E04F 15/182 (2013.01); E04F 15/185 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A flooring underlayment comprising:
a base membrane configured to be installed between a subfloor and floor tiles to allow movement of the floor tiles relative to the subfloor, the base membrane including a base layer and a plurality of studs projecting from the base layer, the plurality of studs having free ends that define pockets therein; and
a cover membrane configured to be coupled to the base membrane to form a flat surface for supporting the floor tiles, the cover membrane including a cover layer and a plurality of studs projecting from the cover layer, wherein the plurality of studs on the cover membrane are configured to fit within the pockets in the plurality of studs on the base membrane to couple the cover membrane to the base membrane.