Patent ID: 9603746
Date: 2017-03-28
CPC Classifications: A61F

Claim:
1. A sound attenuation system comprising: a first end including a shaft and a flange, the flange coupled to the shaft, the shaft having a first durometer, and the shaft having a bore between a receiver end and an emitter end; a second end including a filter stem coupled to a cap by a joint, the filter stem having a second durometer, the filter stem having a hole extending from an inlet end to an outlet end, the filter stem having a port boss and a base plate coupled to the filter stem, the base plate having a perimeter larger than a perimeter of the port boss; wherein the outlet end is coupled to the receiver end; and wherein the cap includes a cavity having a cavity diameter that corresponds to an outer diameter of the port boss and wherein the joint is configured to allow the cap to have a first position in which the cap occludes the hole and to have a second position in which the cap is clear of the hole.