Sound-reducing, composite converting panel

Claim 1

A sound reducing, composite covering panel for internal use in buildings comprising: a. a first planar sheet of gypsum plasterboard, b. a second planar sheet of gypsum plasterboard, c. said first and second sheets having substantially the same size and being between about one-half and three-fourths inch thick, d. said first and second sheets being positioned in a face-toface spaced apart relationship, e. a plurality of cord spacer elements interposed between said spaced apart first and second sheets, f. said cord spacer elements 1. being spaced apart along substantially parallel lines that are between about 3 and 7 inches apart, 2. each having a diameter that is in the order of between about one thirty-second and one-eighth inch, 3. each having a substantially round cross section and being composed of twisted strands that have enough porosity to absorb at least some adhesive, 4. each containing fibrous strands extending obliquely in relation to the longitudinal direction of the cord and substantially filling out the entire cross section thereof, g. each of said cord spacer elements being secured to each of said sheets of gypsum plasterboard by means of an elastically hardening adhesive composition which forms between each cord spacer element and the plasterboard on each side of the spacer element a recessed elastic fillet firmly adhering both to the plasterboard face and to the adjacent portion of the spacer element, whereby each spacer element will form a highly flexible hinge-like connection between the two facing sheets of plasterboard.