US Patent 9330651 Acoustic absorbing combination

An acoustic absorbing combination includes a receptacle having a chamber formed by an outer peripheral wall and a bottom wall, a number of acoustic absorbing devices are arranged in the chamber of the receptacle and each include a housing having a number of couplers extended out of the housing, and an assembling device includes a number of plates extended radially and outwardly from a center member for engaging with the couplers of the housings and for securing the housings together. The assembling device includes a bead formed on each of the plates for detachably engaging with the couplers of the housing.