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:
Jul. 09, 2013
Filed:
Jun. 03, 2005
Thomas W. Fleming, San Diego, CA (US);
Thomas W. Fleming, San Diego, CA (US);
Sperlan Hearing Protection, LLC, San Diego, CA (US);
Abstract
An earplug with a stem () and with fins (-) extending at rearward and radially-outward inclines from the stem, is constructed for comfort and for high noise blocking. The stem has a multiplicity of air pockets () lying in an imaginary band () that lies on the earplug axis (). The band has opposite band sides () spaced radially inward of the periphery () of the stem, the air pockets helping to block the passage of noise. A plurality of the fins are of constant thickness with parallel front and rear surfaces (), and with the fins being stubby with a fin thickness (T) at least 20% of the fin length (E), and with the front surface () of each fin being at least 20% longer than the fin length (E), all as seen in a sectional view taken along the earplug axis (). Stem peripheral parts () that lie between adjacent fins, extend continuously at rearward and radially inward inclines of more than 15°.