Apparatus for removable securing sound-proofing material to a construction vehicle

Claim 1

Apparatus for soundproofing an area of a construction vehicle surrounded by panels comprising: a plurality of externally grooved weld studs secured at spaced locations to said panels and projecting inwardly thereof to provide a non-pointed distal end; a layer of soundproofing material covering the interior of said walls, said studs projecting at least partially through said material; and a button for each stud, including a head and a sleeve defining a smooth wall bore for fitting over an associated stud and being held by the grooves thereof, said button being formed from a material soft enough to permit force fitting of said sleeve over an associated stud without turning, the head of said button being a disc-shaped member having a thickness of approximately five thirty-seconds in. and the thickness of the annular wall of said sleeve being approximately five thirtyseconds in., said button material being of a hardness and cooperating with the thickness of said sleeve and said head to prevent penetration of the body of said button by said stud upon impact, prior to the yielding of said stud under said impact; said sleeve further defining at its mouth a frusto-conical guide surface for guiding said button into engagement with an associated stud during installation of said soundproofing material.