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.:

US 6981504 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 03, 2006

Filed:

Jun. 16, 2004
Applicant:

John Allen Jenkins, Jr., San Marcos, CA (US);

Inventor:

John Allen Jenkins, Jr., San Marcos, CA (US);

Assignee:

Bacou-Dalloz USA Safety, Inc., San Diego, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An earplug of the type that includes a soft foam body () and a more rigid core () that stiffens the body during its insertion into the ear canal, is mass produced so the front end () of the stiff core cannot rub along the surface of the ear canal during insertion. The core is elongated and bonded to the body, and the core has a front end () that is recessed from the front end () of the body, so the soft foam material of the body prevents the front end of the core from contacting the ear canal. The earplug can be mass produced by extruding the soft foam through an extrusion head (), around the cores, with a long core device having been cut into the cores and with the extrusion () cut at locations to leave foam material forward of each core front end.


Find Patent Forward Citations

Jenkins, Jr., John. (2006). Core stiffened earplug (U.S. Patent No. 6981504). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6981504

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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