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:
Apr. 09, 2013
Filed:
Dec. 22, 2011
Jim Tiemens, Laguna Nigel, CA (US);
Stephen D. Gilder, Chula Vista, CA (US);
Jim Tiemens, Laguna Nigel, CA (US);
Stephen D. Gilder, Chula Vista, CA (US);
Sperian Hearing Protection, LLC, San Diego, CA (US);
Abstract
An earbud () for carrying sound from a source () to a person's ear canal, includes a soft foam body () and a sleeve () of stiffer material lying within the body. The body is molded around the sleeve and is chemically bonded to the sleeve without an adhesive between them. The earbud is molded around the sleeve by placing the sleeve on a mandrel pin () within a mold cavity () placing foamable material in the mold and closing the mold. The mold has shoulders with one mold shoulder () that abuts one end () of the sleeve and another mold shoulder () that lies within 0.1 millimeter of the other sleeve end (), to prevent foaming material from leaking into the space () between the mandrel pin and the sleeve passage.