The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 01, 2013
Filed:
Mar. 09, 2006
Edwin Woo, Chula Vista, CA (US);
John A. Jenkins, Jr., San Diego, CA (US);
Edwin Woo, Chula Vista, CA (US);
John A. Jenkins, Jr., San Diego, CA (US);
Sperian Hearing Protection, LLC, San Diego, CA (US);
Abstract
A method for forming a device () that fits into a person's ear canal, that carries sound from a pipe (B) of a speaker assembly (A) into the person's ear canal, and that blocks environmental noise. A first elastomeric material () is molded around an elongated core () to form a device body () with an outer surface that can seal to a person's ear canal. In one method, the first elastomeric material of the body is a soft foamable material and the core is a previously-formed tube () of a stiffer second elastomeric material, with the body bonded to the tube by being molded around it, either in a mold cavity or by extrusion through an extrusion head. In another method, the elastomeric material of the body is a non-foam, and the core () is a rigid pin that is removed from the earplug body after the earplug body has at least partially solidified.