Patent ID: 8444797
Filing Date: 2013-05-21
Classification: H04R,Y10T

Abstract:
1. An earmuff assembly method, comprising the steps of: adhering a flexible pad to a base plate wherein said base plate has a first through opening in the middle, a plurality of through holes around said first through opening, and a back wall extended backward around the circumference of said base plate; said flexible pad is shaped substantially identical to said base plate and also has a second through opening in the middle; adhesive is applied on a front side of said base plate; and said flexible pad is aligned and attached to said front side of said base plate; joining a front cover to said flexible pad by die pressing an appropriately cut material for said front cover completely over said flexible pad wherein an additional rim section is preserved and folded inward to cover and adhere to said back wall; and joining a back cover with a plurality of magnetic elements installed to a back side of said base plate wherein said back cover is also shaped substantially identical to said base plate and also has a third through opening in the middle; corresponding to said through holes, said back cover is configured with a plurality of locking pins whose back ends are configured with indentations for the installation of said magnetic elements; said back cover is tightly attached to said base plate and said rim section of said front cover is locked and concealed by said back cover.