Patent ID: 9328520
Filing Date: 2016-05-03
CPC Classification: B32B,E04F,F24D,Y02B

Claim Text:
1. A strengthened underlayment apparatus to support and isolate a rigid veneer floor covering from a flexible, moveable, or shiftable sub-floor, the strengthened underlayment apparatus comprising: an isolation membrane defining: a plurality of channels lying in a common plane between a top plane and a bottom plane, the plurality of channels being shaped to receive an elongate tubular conduit, the plurality of channels forming a network of straight segments that interconnect between a plurality of intersections in which the elongate tubular conduit lying in some of the straight segments may change direction without leaving the common plane; and, a plurality of support pedestals each comprising an exterior wall that extends toward the top plane, each of the support pedestals forming a generally triangular shape in the common plane, each of the support pedestals further defining an attachment reservoir having an interior wall and a bottom wall forming the attachment reservoir, wherein the interior wall of each of the attachment reservoirs is formed with a dovetail feature such that, in a plane parallel to the common plane, the perimeter of the interior wall is greater at a first height between the bottom plane and the top plane than the perimeter of the interior wall at a second height between the bottom plane and the top plane, wherein the second height is closer to the top plane than the first height, wherein each attachment reservoir extends part way between the bottom plane and the top plane.