Ear plug assembly
AssigneeSpecialty Composites Corporation
InventorsWilliam R. Powers, William H. Lotter, Jr.
Life of this patent
Estimating the term…
Abstract
An ear plug assembly includes a pair of plug bodies made from open cell resilient foam material having a slow recovery rate which are interconnected by a flexible cord having its free ends inserted into preformed holes in the plug bodies before the holes close under the influence of the recovery rate.
Claims7
An ear plug assembly comprising a pair of generally cylindrical plug body means adapted to be inserted into the ear canal of an individual, each of said plug body means being made from an open cell resilient foam material having a slow recovery rate, a flexible cord of a length at least sufficient to extend from one ear of the user to the other ear and having a pair of free ends, and each said free ends of said cord being secured into a respective one of said plug body means by the method comprising the steps of inserting a piercing tool into said plug body means made from said open cell resilient foam material having a slow recovery rate, maintaining the piercing tool in said plug body means for a sufficient period of time to distort the body thereat and temporarily create a hole corresponding to the piercing tool, withdrawing the piercing tool to expose the hole, inserting a free end of said elongated flexible cord into the exposed hole, permitting the hole to close upon the free end of the cord, and repeating the step with the second plug body means and the opposite free end of the cord.
Dependencies are inferred from the claim text.