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dc.date.accessioned2016-08-24T17:55:11Z
dc.date.available2016-08-24T17:55:11Z
dc.date.issued1992-07-21
dc.identifier.urihttp://hdl.handle.net/10919/72696
dc.description.abstractA custom-fitting earplug (18) for hearing protection or other ear applications, or in-ear communications device mounting (40) is fabricated in situ by depositing a foaming material (14 or 24) within the person's ear (10 or 42, respectively) and allowing the foaming material (14 or 24) to expand therein to form foam (16 or 44, respectively). By applying slight pressure from outside the person's ear (10 or 42) through the stem (13) and/or keeper (11) during expansion, the foam (16 or 44, respectively) will be tightly packed in and conform to the ear canal. An optional sheath (15 or 36) positioned over the foaming material (14 or 24, respectively) serves to provide a smooth outer surface for the earplug (18) or communications device (40) produced and can aid in defining and limiting the expansion of the foam (14 or 24, respectively).
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherUnited States Patent and Trademark Office
dc.titleCustom-fitting earplug formed in situ using foaming action
dc.typePatent
dc.identifier.urlhttp://pimg-fpiw.uspto.gov/fdd/11/314/051/0.pdf
dc.date.accessed2016-08-19
dc.type.dcmitypeText
dc.contributor.assigneeCenter for Innovative Technology
dc.contributor.assigneeVirginia Polytechnic Institute and State University
dc.contributor.assigneeVirginia Tech Intellectual Properties, Inc.
dc.contributor.inventorCasali, John G.
dc.contributor.inventorMauney, Daniel W.
dc.date.filed1990-08-20
dc.identifier.applicationnumber7569812
dc.subject.uspc128/864
dc.subject.uspcother128/865
dc.subject.cpcA61F11/08
dc.subject.cpcH04R25/658
dc.subject.cpcH04R25/656
dc.type.patenttypeutility
dc.identifier.patentnumber5131411


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