| 摘要 |
An earplug is described, of the type which has an elongated stem (12, FIG. 2) and a plurality of hollow cone elements (20-24) each centered on the stem and spaced along a forward portion thereon, which has enhanced noise-blocking ability and which is easier to install and remove. Each element is in the shape of a hollow cone, and has a peripheral portion (32) that extends at an included angle (C) that is preferably about 60°, which results in wider area sealing of the peripheral portion of the cone elements against the ear canal of the wearer. The considerable included angle of the cone element peripheral portions, also facilitates the folding over of the peripheral portion of an element into a reverse configuration (32C, FIG. 7) during pullout of the earplug from the ear canal, to facilitate such pullout.
|
